On March 11, 2026, Frederick William Vandermast Jr. passed peacefully surrounded by his loving family after an eleven year valiant battle with cancer. He is survived by his loving spouse of 68 years Betty Ann Vandermast (née Soper); devoted father of Kim Marie Longo (Robert), Cynthia Carlin Horka (Bruce) and Caroline Ann Schiller (Harry); cherished grandfather of Steven and Lindsey Chaffman, Ryan, Michael and Renee Horka, Ridgely McKinless, Kyle, Alyssa, Keegan and Emerson Schiller; dear great grandfather of Emery and Landen Chaffman, Aveline, Ellia, Cecelia, and Geneva Horka, Hudson and Shepherd Schiller; loving brother of the late Ernest Vandermast; preceded in death by his loving parents; also survived by many extended family and friends.

Friends may call at the family owned Ruck Towson Funeral Home, Inc., 1050 York Rd. (beltway exit 26), on Thursday, March 19th, from 2 to 4 and 6 to 8 PM.  A Funeral Service will be held at St. John's Evangelical Lutheran Church, 3911 Sweet Air Rd, Phoenix, MD 21131, on Friday, March 20th, at 11 AM.  Interment Church Cemetery.

In lieu of flowers, memorial contributions may be made in his name to Johns Hopkins Greenberg Bladder Cancer Institute at The Brady Urological Institute Development Office, Attn: Johns Hopkins Greenberg Bladder Cancer Institute, 600 N. Wolfe Street CMSC 130, Baltimore, MD  21287