Mr. and Mrs. Isadore J. DeMarco Jr. of Orchard Park celebrated their 50th wedding anniversary with a renewal of marriage vows at Our Lady of Sacred Heart Catholic Church in Orchard Park, followed by a family reunion dinner. A trip to Las Vegas and South Carolina is planned. Mr. DeMarco and Mary Geisendorfer were married Aug. 17, 1963, in Our Lady of Sacred Heart Catholic Church. He is a retired shop supervisor for Rogers Industrial Springs Inc. in Buffalo. They have three children and nine grandchildren.