William Williams, Jr. was born 7 Dec 1827 in Kemmeys, Commander, Monmouth, Wales, the 4th of 9 children of William Williams and Charlotte Bolton. William was baptized 17 Jan 1845, at the age of 17. Margaret Pettigreen Hope was born 19 Jan 1833 in Bristol, Gloucester, England, the only known child of Thomas Hope and Martha Harris. Margaret was baptized over five years after William was baptized, on 11 Oct 1850, also at the age of 17. They were married 7 Feb 1852, in Treventhin, Monmouthshire, Wales, when he was 24 and she was 19. They migrated to America and were endowed and sealed 3 Nov 1857 (when he was 29 and she was 24). Only Margaret Hope Williams, born 13 Sep 1855, was alive at that time. All their other children were born under the covenant. They had 9 children, 6 of which lived to full life.
Neither William nor Margaret have been sealed to their parents at this point.