Altogether William and Mary had 12 children including 2 sets of twins. Only four of the children survived to adulthood. These were the children who had traveled with them from England: my great grandmother Elizabeth Sargent (a twin), a brother Samuel who became a Methodist minister (his portrait once hung in a chapel in Ocean Grove–it may still be there), Sarah (nickname “Sadie,”) and William Jr. Samuel married Ella Tunison and they had two children: Vivian Sargent, who married into the Packard family (the automakers), and a son Norman Vincent Sargent, who followed in his father’s footsteps and became a Methodist minister.
William Sargent (Sr.) remarried, how long after Mary’s death, I do not know, but it was within the space of a few years. His second wife was a wealthy widow named Mary Bowley Pitt who had a son named William Pitt. This Mary Bowley Pitt also had some connection lineage-wise with prime minister William Pitt. With the financial backing of his second wife, William got into the spring bed business (as a salesman) and the family’s financial position improved. The 1880 Census shows the newly blended family living in Jersey City: Wm. Sargent (51), Mary (41), Elizabeth (“Lizzie”) (24), Sarah (“Sadie”) (21), Wm. Jr. (19), and Wm. Pitt (17). By then Elizabeth was near to being married to William Trewin, and Samuel may well have been married.
I do not yet know what became of Sarah and William Jr., e.g. whether they married, had children, etc. Sarah died at age 45, and William died at age 35. I have no record them ever marrying, and I think my grandmother would have mentioned that. Elizabeth, Sarah, and William are all buried in the family plot at Evergreen Cemetery in Hillside, NJ. As for William Sargent Sr., I do not yet know when he died or where he was buried. Perhaps in time, I will make those discoveries.