Dr. Lawrence M. Blum, 91, of Bridgeport, died May 2. He was the husband of Florence Blum. Born in Brooklyn, N.Y., he was the son of Daisy (Friedman) and Dr. Harry Blum, and the step-son of Regina Blum. In addition to his wife, he is survived by his children, Stephen Blum and his wife Andrea, Robert Blum, and Esther Horn and her husband Jeremy;  grandchildren Leo and Alegra Blum, and Benjamin Hor; his, brother-in-law Charles Kruger and his wife Ellen; and his nieces and nephew.