Sister Margaret Mary Feahilly, O.S.U. (Miriam Feahilly), 90, died Sept. 4, at Maria Regina Residence, Brentwood, L.I.

Born in New York City, she entered the Congregation of the Ursuline Sisters of Tildonk in 1949 and professed her final vows six years later.

She taught at Our Lady of Grace, Howard Beach, 1952-61; Nativity of the Blessed Virgin Mary, Ozone Park, 1961-66 and Holy Family H.S., Huntington, 1966-71.

She then served at librarian and archivist for 25 years at Dowling College, Oakdale, L.I., from 1974 to 1999.

In 1999, she retired to Blue Point where she continued a ministry of prayer and fundraising.

She is survived by her sister Mabel Caruso. Burial was in Holy Sepulchre Cemetery, Coram, L.I.