Sister Patricia was born in Dorchester, Massachusetts. She was the daughter of Edmund and Rosina (McLaughlin) Gallahue, and graduated from St. Gregory High School in Dorchester. She entered the Sisters of Notre Dame de Namur in 1946 as Sister Rose St. Joseph. She graduated from Emmanuel College in Boston with a concentration in Math and Education. She earned a master's degree in teaching with a specialization in Math from Brown University in Providence. Sister completed many additional courses of study to enhance her education skills.
Sister began her teaching career at Notre Dame schools in East Boston and Somerville. She followed to teach Math at St. Teresa High School in Providence, East Catholic High School in Manchester, Conn. and Central Catholic High School in Norwalk, Conn.
1n 1979, she redirected her ministry to leadership roles involving the Sisters of Notre Dame de Namur. She served the Connecticut Province in several capacities and assisted the Sisters of Mercy in West Hartford as Director of Strategic Planning. She was also Assistant Director from 1985 through 1991 of the Leadership Conference of Women Religious in Washington, D.C.
Sister Patricia was predeceased by her sister, Sister Rosina Gallahue, SNDdeN, and two brothers, John and Joseph Gallahue. She leaves four nieces, Elaine Schembari of Scituate., Joan Pavidis of Holbrook, Mary Fasoli of Braintree, Helen Irvin of Squantum and her sisters in religion, the Sisters of Notre Dame de Namur.
Funeral services for Sister Pat took place on Monday, May 10th, 2021, at St. Mary’s in Shrewsbury, Mass. She is interred at Notre Dame Cemetery in Worcester, Mass.