John M. Frederick, 90, a retired partner in a family plumbing and roofing company, died Monday at St. Agnes Hospital of complications after surgery.
A mass of Christian burial will be offered at 10 a.m. tomorrow at St. William of York Roman Catholic Church, Edmondson Avenue and Cooks Lane.
Mr. Frederick, who lived on Nottingham Road, retired about 25 years ago as a partner in M.J. Frederick & Bro., which had been started by his grandfather.
He was a former president and an honorary life member of the Maryland Master Plumbers Association.
After his retirement from the plumbing and roofing firm, he served for about five years as president of the Royal Oak Federal Savings and Loan Association. Long a member of the board of the association, he was named director emeritus about five years ago.
Born in Baltimore and a graduate of Calvert Hall College High School, he was a member of St. Bernardine's Church before becoming a member of St. William of York.
His first wife, the former Frances Evelyn Furst, died in 1967.
Survivors include his wife, the former Erma Kemp; four sons, John C. Frederick of Lakeland, Fla., Joseph F. Frederick of Baltimore; Charles H. Frederick of Bethlehem, Pa., and Thomas M. Frederick of Ellicott City, 11 grandchildren and three great-grandchildren.