Born Mary Rita Naughton, she was a member of St. Francis Xavier Parish and a graduate of Hallahan High School.
She earned her registered-nurse certification from St. Francis Hospital School of Nursing in Trenton in 1949; a bachelor's degree in nursing from Villanova University in 1954; and a master's degree in health administration from St. Louis University in 1962.
She was a member and past president of the Pennsylvania Conference of Catholic Hospitals. She received the Villanova University Alumni Award in 1986 and was honored in the early 1980s by the Philadelphia chapter of the American Red Cross as its citizen of the year.
Sister Clare began her health-care career in the Diocese of Trenton in 1946, working at St. Francis Hospital until 1956. She then began nearly five decades of affiliation with the Archdiocese of Philadelphia.
She was administrator of the former St. Mary Hospital from 1964 to 1971. From 1971 to 1976, she worked at St. Mary Medical Center, where she acted as coordinator for a new hospital building, and then as administrator.
"Her involvement in the building of St. Mary Medical Center in Langhorne was quite an achievement," Sister Ann Marie said.
Sister Clare served from 1976 to 2004 at St. Agnes Medical Center as administrator, director of volunteers, and volunteer in the medical library.
From 2004 to 2009, she volunteered at St. Maria Goretti High School before retiring to Assisi House, where she lived until her death.
Services were Friday, April 12, and interment was in Our Lady of Angels Cemetery in Aston.
Surviving is a sister, Dorothy Naughton. Donations can be made to the Sisters of St. Francis Foundation, 609 S. Convent Rd., Aston, Pa. 19014.
Condolences to the family may be offered at www.lyonsfs.com.
Contact Bonnie L. Cook at 215-854-2611 or firstname.lastname@example.org.