Who is Joylette Goble? Learn about Joylette Goble Hylick, Katherine Johnson’s daughter and a NASA mathematician, plus what happened to her sister Connie and Katherine Johnson’s first husband.
Search interest in Joylette Goble has grown since the film Hidden Figures brought her mother, NASA mathematician Katherine Johnson, to a global audience. Most coverage focuses on Katherine Johnson’s calculations for John Glenn’s orbital flight. Her daughters get far less attention, even though they carried her story forward. Joylette Goble, known professionally as Joylette Goble Hylick, is one of them.
The topic matters for three reasons. It shows how a family can shape a historic career. It fills a gap in the public record, because many readers ask who Joylette was and what happened to her sister Connie. And it corrects a common misconception that Katherine Johnson was the only mathematician in her household. This guide covers Joylette Goble’s background, her career, her sisters, her mother’s marriages, and the myths and questions that surround the family.
Who Is Joylette Goble?
Joylette Goble is the daughter of Katherine Johnson (née Coleman) and her first husband, James Francis Goble. She is better known today as Joylette Goble Hylick, using her married surname. She is one of three daughters, alongside Constance and Katherine.
Her mother was born Creola Katherine Coleman in White Sulphur Springs, West Virginia, on August 26, 1918, and died in Newport News, Virginia, on February 24, 2020, at age 101, according to the biography published by the University of St Andrews. Joylette is named for her maternal grandmother, Joylette Coleman, who was a schoolteacher. The name has been passed down through three generations.
Quick facts
- Full name: Joylette Goble Hylick
- Parents: Katherine Johnson and James Francis Goble
- Siblings: Constance (Connie) Goble Garcia and Katherine Goble Moore
- Known for: Working as a NASA mathematician and co-writing her mother’s memoir, My Remarkable Journey
Joylette Goble Age and Date of Birth
Many people search for Joylette Goble’s age, but her exact date of birth is not widely published. News reports give a rough timeline. A NASA feature from 2015 described her as Johnson’s 74-year-old daughter, and a 2021 interview put her age at 80. Both place her birth around 1941, which makes her in her mid-80s today.
Some sources call Joylette the oldest daughter and others give that title to Constance, so reporting on birth order is inconsistent. Constance’s reported age at death points to a birth year later than the one implied for Joylette. For anything formal, such as a school report, a published biography, or a legal document, cite a primary source like the family’s own memoir rather than a general website.
Early Life in a Family of Educators
Joylette Goble grew up in a household built on education. Her mother taught school before her NASA career, and her grandmother was a teacher. Katherine Johnson married James Goble in 1939, and the family later settled in Newport News, Virginia, in 1952, according to BlackPast’s biography of Katherine Johnson.
Her early years also included a stay in Bluefield, Virginia. In 2025, Joylette Hylick and Katherine Moore returned to Bluefield after 70 years to see historical plaques honoring their mother’s work in local education and the home where she and James Goble began raising their family. The visit shows how closely the family’s personal history is tied to the places that now honor it.
Practical example: Families researching their own history can learn from this. Town plaques, school records, and census data can confirm where an ancestor lived, then be matched with family memories, as Joylette and Katherine did in Bluefield.
Joylette Goble Hylick’s Career at NASA
Joylette followed her mother into mathematics. A 2021 interview noted that Joylette, like her mother, also worked as a NASA mathematician. A local New Jersey news report added that she held roles at NASA and Lockheed Martin before retiring, and that she became “the girl” in the same sense her mother had, a reference to the nickname behind the John Glenn story.
Her mother did not push the subject on her children. According to that same report, her mother did not press math on the family, but the lessons Joylette learned from her carried her through her career. Katherine Johnson led by example instead of by pressure.
Practical example: Parents who work in demanding fields can copy this approach. Show children what careful, honest work looks like, and let them choose their own path.
What Happened to Katherine Johnson’s Daughter Connie?
Connie is Constance Goble Garcia, Katherine Johnson’s daughter. She died in 2010. Katherine Johnson’s obituary stated that she was preceded in death by her daughter Connie Garcia in 2010. A 2017 Associated Press interview with her sister Katherine likewise noted that Johnson’s daughter Constance died in 2010.
Public sources do not state a cause of death, and the family has not published one. Treat claims about how she died with caution, since some low-quality websites repeat unverified details. One entertainment article cites a legacy notice saying she was 67 at the time of her death.
Constance is often described as having worked in social work, but that detail comes from weaker sources, so use it carefully. What is well documented is that she was part of the family and that her mother outlived her by a decade.
Katherine Goble Moore: The Youngest Sister
The youngest daughter, Katherine Goble Moore, is named after her mother. She became a teacher and guidance counselor. According to the Associated Press, she retired early as a guidance counselor in 2003 and moved from New Jersey to Greensboro to care for a sick uncle.
Moore and Joylette later became public voices for their mother’s legacy. A community college speaker series described how Moore and her sister Joylette Hylick travel the country speaking on behalf of their mother. The two sisters speak at libraries, schools, and civic events, often explaining that growing up, Katherine Johnson was simply “Mom.”
Did John Glenn Ask for Katherine Goble?
Yes, in a widely told account. Before his 1962 Friendship 7 flight, John Glenn reportedly asked that “the girl” check the computer-generated orbital numbers by hand. “The girl” was Katherine Goble, her name at NASA at the time. She repeated the calculation, and the numbers held up, which gave Glenn the confidence to fly. NASA’s own histories and Johnson’s memoir recount this story.
A news report in which her daughter reflected on the flight said that she calculated the trajectory for the first American to go into space and did most of the math for Glenn’s flight on Friendship 7. The anecdote also explains why the name “Goble” appears so often in searches. Katherine was still Katherine Goble in the early 1960s, before her 1959 remarriage was widely reflected in her professional credits and public recognition. Many readers then search for “Katherine Goble” and “Joylette Goble” together.
What Happened to Katherine Johnson’s First Husband?
James Francis Goble died in 1956 from a brain tumor, according to BlackPast’s biography. The couple had married in 1939 and had three daughters. He died when the girls were still young, leaving Katherine to raise them while building her career at NASA’s predecessor agency, the National Advisory Committee for Aeronautics.
She remarried in 1959. Her second husband, Lt. Col. James A. Johnson, was a U.S. Army officer. Obituaries note that he died in 2019, the year before she did. The two marriages explain why she is known by different surnames, Goble in early documents and Johnson later. That matters for genealogy and for searching archives.
Practical example: If you research mid-century women in science, search under maiden, first-married, and later-married surnames. Records often appear under only one of them.
Who Was the First Black Woman at NASA?
No single name settles this question. It depends on how the question is framed:
- Dorothy Vaughan became the first Black supervisor at NACA, NASA’s predecessor, and led the West Area Computing unit.
- Mary Jackson became NASA’s first Black female engineer in 1958.
- Katherine Johnson joined the same computing pool in 1953 and became one of the most prominent Black women to work as a research mathematician there.
Sources sometimes call Katherine Johnson the first African American woman in aerospace work, but historians usually say these women were pioneers together. Joylette Goble’s own career builds on that foundation. She is part of a second generation that entered technical fields because the first generation had already opened the door.
Why Joylette Goble’s Story Matters Today
The memoir My Remarkable Journey ties the family story together. Joylette Hylick and Katherine Moore helped Johnson write it, and a 2021 interview noted that Johnson wrote the memoir with help from her two daughters, Joylette Goble Hylick and Katherine Moore.
Their role extends to public honors. At a 2017 science center gala, Johnson, then 98, could not travel, but her daughter Joylette accepted the honor on her behalf. A 2020 tribute also recorded Joylette’s reflection that the family did not grow up thinking they had a famous person in the house.
Three lessons come from the family:
- Humility: Johnson often brushed off praise with the words, “I was just doing my work.”
- Preparation: Their careers rest on strong schooling and early encouragement.
- Telling the story: Joylette and Katherine ensured the family’s account would be told in their own words.
Common Myths and Search Confusions
A few points trip up readers searching for Joylette Goble:
- Joylette is not only a grandmother’s name. It is a family name shared by Katherine’s mother and her daughter.
- Goble and Hylick are the same person. Hylick is her married name.
- Katherine Goble, Katherine Moore, and Katherine Johnson are different people. The first is the NASA mathematician’s earlier name, the second is her youngest daughter, and the third is her later name.
- Details about Constance are thin. Treat unsourced websites with caution.
- Not every article is reliable. Some low-quality pages mix up husbands, dates, or children.
Practical tip: When a page gives birth years, causes of death, or careers without naming a source, cross-check it against obituaries, NASA pages, or major news outlets.
Conclusion
Joylette Goble Hylick is far more than a name in a famous mother’s biography. She is a mathematician, a keeper of family history, and, with her sister Katherine, a co-author of the memoir that tells Katherine Johnson’s life in her own voice. The family also lived through real losses. James Goble died in 1956, and Connie died in 2010, with her cause of death not publicly reported.
To recap the main questions: John Glenn did ask for “the girl” to check the numbers, Katherine Johnson’s first husband died of a brain tumor in 1956, and the title of NASA’s “first Black woman” depends on the role you mean, with Vaughan, Jackson, and Johnson each a pioneer. For anyone researching the family, the best path is to start with primary sources such as My Remarkable Journey, NASA features, and reputable obituaries.