 In 1870, Moses married Adelaide Mantania, daughter of John D. and Olive (Head) Mantania, by whom he had six children, including three who survived to adulthood, Grace, Mary and Edgar A. Luce, Sr. His son Edgar Augustine Luce, Sr. (1881–1958) graduated Sanford University in 1905 and went on to become a senior partner of Luce, Forward, Kunzel & Scripps and judge of the Superior Court of San Diego Co; he was also a Californian State Senator from 1914 to 1918.A son of Edgar Sr., Edgar A. Luce, Jr., graduated from Stanford in 1948 and became a managing partner in Luce, Forward, Kunzel & Scripps.A grandson of Moses Luce was Gordon C. Luce of La Jolla, who became President (1969) and later Chairman and CEO (1979) of the San Diego Federal Savings & Loan (later the Great American First Savings Bank), a company Moses Luce had been the attorney for.