Rough estimate based on number of children living at date of grandfather's will. to Unknown
References
↑ 1.01.1 Hyde, Myrtle Stevens, “A Study of the Downing Family in England, with Connections in Early New England”, v. 74 [Jul-Oct 1999] : 161-174, 299-308., in The American Genealogist (TAG). (Donald Lines Jacobus, et.al.) (at 74:169-170).
John is undoubtedly father of the minor Kirby grandchildren that Francis Kirby named in his will without naming their parents: Godsgift, Suzan, Elizabeth, Phebe, Camdena, and Welcombe.