Jo, a longtime resident of Blawenburg, N.J., died April 22, 2022, at home.

Jo was born Sept. 15, 1942, in Key West, Fla. He grew up in New York City and Sodus Point, N.Y. He attended the Grace Church School, and graduated from the Choate School, Princeton, and the Harvard Graduate School of Education. He was proud to be one of four generations to attend Princeton: his grandfather Jotham Clarke Johnson, Class of 1879; his father Jotham Johnson, Class of 1926; Jotham, Class of 1964; and his son, Jotham Thomas Johnson, Class of 2000. Jo majored in Romance languages and European studies — an interest since living in Rome with his parents as a boy. He excelled at sports and was the starting catcher on the baseball team all four years at Princeton.

After discharge from the Marines in 1967, he spent his life in university administration and alumni work at RPI, Cornell, Recording for the Blind, Rutgers, and Princeton, where he had more than 30 years of service — lastly as director of leadership gifts and then the inaugural Director of Stewardship — retiring in 2010.

Jo’s devotion to Princeton continued in his volunteer activities as secretary of his Class of  ’64 for 35 years; trustee of Cap & Gown for more than 50 years; and inaugural secretary of the Princeton Hockey Association. He enjoyed meeting prospective students, even traveling in Canada to help recruit hockey players, and following their undergraduate careers and beyond. A past volunteer of the Blawenburg Fire Co., he was a member of the Old Guard of Princeton and Springdale Golf Club and an avid reader of history.

Jo is survived by his wife of 50 years, Grace Tucker Butler; and their three children, Alex and his wife Andrea, Tom and his wife Leigh Morrison, and Sarah and her husband Josh Hendrick. He was especially proud of his three grandchildren: Gabriel, Victoria, and Harper.

Undergraduate Class of 1964