Sister Mary Catherine Grehan entered into eternal life on June 2, 2023 at The Village at Incarnate Word, San Antonio, Texas. She was born in Brierfield, Ballinasloe, Co. Galway, Ireland on June 7, 1944, to John and Katie (Boyle) Grehan.

Sister Mary Catherine entered the Congregation of the Sisters of Charity of the Incarnate Word in 1961.  She served in the Congregation's education ministry in Missouri and Texas.

Sister Mary Catherine is survived and dearly missed by her sister, Anne Byrne, her brother, Martin Grehan, nieces and nephews and by the Sisters of Charity of the Incarnate Word.

Mass of Christian Burial will be celebrated June 12, 2023 at 10:00 a.m. in the Chapel of the Incarnate Word. Interment in the Convent Cemetery

In lieu of flowers, contributions may be made to the Congregation of the Sisters of Charity of the Incarnate Word, 4503 Broadway, San Antonio, Texas 78209.