I don't really know what to say here. 58 years at one school system, that's a whole life given to it.
Their story
Sister Michael Kathleen Deane, OSF, was an American Franciscan sister and Catholic school educator who spent 58 years teaching and leading schools in the Archdiocese of Baltimore, including 23 years as principal of St. Clement Mary Hofbauer School in Rosedale, Maryland. Among the thousands of children she taught was a…
Sister Michael Kathleen Deane, OSF, was an American Franciscan sister and Catholic school educator who spent 58 years teaching and leading schools in the Archdiocese of Baltimore, including 23 years as principal of St. Clement Mary Hofbauer School in Rosedale, Maryland. Among the thousands of children she taught was a seventh grader named Martin O'Malley, who went on to become mayor of Baltimore and governor of Maryland and never forgot her.
She was born Mary Kathleen Deane in Washington, D.C., in 1930, the daughter of Henry and Kathleen Deane, and grew up with her brothers Borden and William in Nativity Parish. She graduated from the Academy of the Holy Names and credited her vocation to both her Catholic father and her devout mother, who, as she liked to point out, was a member of the Takoma Park Baptist Church. She entered the Sisters of St. Francis of Philadelphia in 1948 and professed her first vows in 1951. She later earned a bachelor's degree in English from Mount St. Mary's University and a master's degree in education in management and supervision from Loyola University Maryland.
She taught elementary grades in Baltimore at Saints Philip and James, St. Katharine and Shrine of the Little Flower schools, then the middle grades at Immaculate Conception School in Towson and St. Clement Mary Hofbauer School. After five years teaching seventh grade at Our Lady of Lourdes School in Bethesda, where O'Malley was her student, she returned to St. Clement as principal. In 23 years in that post she led the school through accreditation and wired it for the computer age, and she was known for knowing every child by name and sending each a handwritten birthday card. When she retired as principal she spent another 12 years volunteering at The Catholic High School of Baltimore.
At her golden jubilee in 2001, O'Malley, then mayor of Baltimore, surprised her at St. Clement and proclaimed Sister Michael Kathleen Day. Outside school she loved gardening, music, puzzles and the Orioles and Ravens. In 2014 she moved to Assisi House, her congregation's retirement residence in Aston, Pennsylvania, where she served in prayer and hospitality ministry.
Sister Michael Kathleen Deane died at Assisi House on 13 October 2026, aged 96, after 75 years as a professed Franciscan. A Mass of Christian Burial was offered at Assisi House on 19 October 2026, followed by burial in Our Lady of Angels Cemetery in Aston. Many former students shared tributes to her online.
Biography adapted from Sisters of St. Francis of Philadelphia obituary and memorial, Catholic Review (23 October 2026).
In their own words
“Someday I hope to greet him as President O'Malley.”
On her former student Martin O'Malley, quoted in her congregation's memorial
