In 1836, Townsend was married to Louisa Bacon Kellogg (1812–1890), a student at the
Emma Willard School and the daughter of Oren Kellogg, Esq. Together, they were the parents of a daughter: • Frances Kellogg Townsend (b. 1841), on September 7, 1864. Townsend became gravely ill in December 1891, but recovered and lived for 12 more years. He died at his home in
Troy, New York, of bronchial pneumonia on March 8, 1903. He was buried at the
Oakwood Cemetery in Troy. ==References==