Michael Thomas Donnelly (born June 4, 1927, died 1982) was a Roman Catholic Missionary priest from Belfast, Northern Ireland. He was born to Teresa Fitzpatrick Donnelly and Michael Thomas Donnelly. His younger brother, Hugh Patrick Donnelly, survives and resides in Newark, Delaware, USA. In the early 1970s, Father Michael was a monk in Mexico. He became fluent in Spanish. During his life, Father Michael was consistently attracted to and interested in apparations of The Blessed Mother and Catholic Mysticism. Saint Pio of Pietrelcina was of great interest to him.