Watertown - Mr. Robert J. Jordan, Sr., of Watertown, died Friday January 6, 2006 at Mount Auburn Hospital, Cambridge. He was 75. Born in Boston, a son of the late Daniel and Helen (Manning) Jordan, he worked for many years as a warehouse foremen for the Dowd Company in Woburn. He was the husband of the late Sarah A. (Perkins) Jordan and brother of the late Claire Duke, Joan Plouffe and John Jordan He is survived by his children, Margaret A. Jordan of Portsmouth, New Hampshire, George A. Jordan, Robert J. Jordan, Jr., and Marie L. Tsacogianis all of Watertown, and Sheila A. Jordan of Waltham; one brother, Donald Jordan of Pinehurst, three grandchildren, Teddy N. Tsacogianis, Leo A. Jordan and Sarah N. Tsacogianis and many nieces and nephews. The Funeral will be held Tuesday at 8 a.m. from The Joyce Funeral Home, 245 Main Street (Rte.20), Waltham followed by a Funeral Mass in Saint Lukes Church, 132 Lexington Street Belmont at 9 a.m. Burial will be in Saint Patricks Cemetery, Watertown. Visiting hours are Monday from 5 to 8 p.m. Memorial donations may be made to The American Heart Association, 20 Speen Street Framingham, MA 01701.