A Mass of Christian burial for John M. Frederick, a retired partner in a family plumbing and roofing company, will be offered at 10 a.m. tomorrow at St. William of York Roman Catholic Church, Edmondson Avenue and Cooks Lane.
Mr. Frederick, who was 90 and lived on Nottingham Road, died Monday at St. Agnes Hospital of complications following surgery.
He retired about 25 years ago as a partner in M. J. Frederick & Bro., which had been started by his grandfather.
Mr. Frederick 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.