Various, The New England Historical & Genealogical Register…
“ S. W. Clark was the second of ten children, and the eldest of four sons. His brother, Rev. William Clark, was several years pastor of the 1st church in Wells, Me., and has since been extensively known, in his agency for the A. B. C. F. M. Rev. Mr. Clark of Greenland married Frances M., daughter of Dea. Robert Clark, for many years an elder of the Presbyterian church, in New Boston. She deceased July 12, 1832, leaving one child, Frances Wallace. Mr. Clark's second marriage was with Rebecca Elisabeth Howe, a descendant of the Pilgrim, John Alden. ”
