Michael O’Brien, a Long Island general practice lawyer and former prosecutor, died Jan. 27 following a stroke. He was 76.

O’Brien was a longtime prosecutor with the Queens County District Attorney’s Office, where he stayed until 1992. He worked on numerous high-profile cases, including some in Albany.

He then ran a small private practice until the end of his life, taking on general matters and appeals work for the district attorney’s office.

Born in Brooklyn in 1936, O’Brien briefly attended a seminary before switching to St. John’s University. There he met his wife of 53 years, Frances.

He became an English teacher at Sewanaka High School in Floral Park, then worked for several years in Nassau County government with the Democratic party.

O’Brien pursued his law degree at St. John’s University School of Law while working full time, graduating in 1976. He then joined the Queens district attorney’s office.

In addition to his wife, he is survived by four sons, Michael, Hugh, Bernie and Bill; a daughter, Moriah Gillis; and eight grandchildren.

Visiting hours are set for Feb. 3 at the Beney Funeral Home, 79 Berry Hill Rd. in Syosset, from 2 to 4 p.m., and Feb. 4, from 2 to 4 p.m. and 7 to 9 p.m. A funeral Mass will be held at St. Patrick Church in Huntington on Feb. 5, at 10:45 a.m.