The undated petition to divide the estate of John French, excerpted below, ties together Mary's parents with children of both her marriages:
The Humble request of John French & Dependance French Administrat'rs to the estate of John French late of Braintree dec'd their father. Humbly sheweth ... persons concerned in s'd estate are John French the eldest son[,] Dependance French, Thomas French, Samuell French, William French the orphan of William French dec'd[;] Two daughters, viz. Temperance Bowditch wife of Jn'o Bowditch, Elizabeth Wheelock of Mendon; children of Mary Lamb dec'd are Mary Poole, Aliis [i.e, alias] Thayer by her first husband Poole & John Lamb[,] Samuell Lamb[,] Margarett Lamb, Mary Lamb, Grace Lamb, Hannah Lamb, ..."