Mr. and Mrs. Leon Brzezowski of Boston celebrated their 50th wedding anniversary. A family gathering is planned for July at their summer home in Sherkston Shores, Ont., Canada, followed by a tropical cruise in the fall. Mr. Brzezowski and the former Judy Kuklewicz were married May 9, 1964, in Queen of the Most Holy Rosary Church in Buffalo. He is a former electrician of Bethlehem Steel and P&G Steel Products. She is retired from Churchill Childcare in Boston. They have three children and five grandchildren.