John Webster's widow, Mary Shatswell Webster, married John Emery Sr. Mary Webster married John Emery Jr... Thus John Jr.'s mother in law was also his stepmother.
Sorry, I don't have a conventional group sheet. This is what I have been able to piece together... Some have shown Ezekiel Northend as father of Agnes who married John Emery...but I did some checking of dates, etc. and Ezekiel is her brother. As I was tracing back the hale line (from Lydia Hale who married Josiah Bartlett and whose daughter married Susannah bartlett married John Emery) I noted that Sarah Northend had married Thomas Hale...and Sara's parents were Ezekiel Northend and Edna Bayley. Thomas Hale and Sara Northend had Ezekiel Hale who married Ruth Emery and had Lydia Hale who married Josiah Bartlett.
(1) John Emery c 1546 = 10 May 1565 St Bartholemew, Winchester, England Alice Banet c 1546 or Richard Emery d 1611 Romsey Hampshire ENG = Ellen Bunting
(2) John Emery 1572 d 25 Jun 1627 Romsey, Hampshire, England = 27 Oct 1597 Romsey, Haunts, England Agnes Northend c 1576 d 1 Nov 1626 Romsey, Hampshire, England (John Northend of Weeton, Parva, Rawley, Yorkshire England= Alice Banet?) (ALT: John Northend = Elizabeth Cole; had son Eziekiel Northend = 1 dec 1648 Rowley Essex MA Edna Halstead)
(3) John Emery England d 1595 first year
(3) Elizabeth Emery
(3) Ellin Emery 7 Sep 1602
(3) Hugh Emery 6 Oct 1604 Romsey, Hampshire, England
(3) George Emery c 1609
(3) Margery Emery c 1610
(3) Edward Emery
(3) John Emery 26 Sep 1598 Romsey, Hamps, England d 3 Nov 1683 Newbury, Essex, MA = (1) 16/26 Jun 1620 Whiteparish, Wiltshire, England Mary Alice Grantham 1599 Romsey England d Apr 1649 (Andrew Grantham) (2) 29 Oct 1650 Newbury, Essex, MA Mary (Shatswell) Webster 1606 Ipswich, Suffolk, England d 28 Apr 1694 Newbury, Essex, MA (John Shatswell c 1574 Ipswich, Suffolk England = c 1600 Judith Dillingham c 1578 Ipswich, Suffolk, England d 17 Apr 1648 Ipswich) (Note: Mary Shatswell was previously married 4 Nov 1636 Ispwich Suffolk ENG to John Webster 27 Jan 1605 Haverhill Essex MA d 4 Nov 1646 Ipswich Suffolk ENG a second cousin of Daniel Webster. The daughter of John Webster and Mary Shatswell, Mary Webster, married John Emeryâ€™s son John.) (Abigail Webster, a descendant of John Webster and mary Shatswell married John Emery b 6 Jan 1728, son of Joshua Emery and Sarah Smith)