Do you have a death date and place for Seth? I show his marriage to Hannah WHITAKER on 22 Jan 1735/36 in Rehoboth, but have no vital information for her. I show the couple with six children, but there is a question for the first, Hannah, b. 10 Sep 1736, as the notes in my NEGHR article say that she may be the dau. of Eliphalet Briggs (Seth's brother)? I show the following children for William BRIGGS II and Mehitable BLAKE: 1. Agnes--b. abt 1697 in Taunton; d. bef 1734 2. Lieut. Nathaniel--b. 1698/1700 in Taunton; d. 14 Aug 1773/75 (in 75th year); md. to Judath GUILD (b. 19 Sep 1697 in Wrentham, MA; d. 22 Nov 1774 in Taunton) on 16 Jun 1720, in Wrentham. 3. Mehitable, b. abt 1703 in Taunton; d. 8 Sep 1782 in Wrentham; md. 29 Jan 1729 to John WARE. 4. Seth, b. abt 1709 5. Eliphalet, b. abt 1713, in Taunton; d. 26 Jun 1780 in Keene, NH; md. 28 Nov 1734, to Abigail GARY or GRAY. I have eight children for William BRIGGS (b. 1645/46; d.3 Jan 1728 in Taunton) and his wife, Sarah MACUMBER (b. abt 1643/46 in Marshfield; MA, d. 20 Mar 1680, in Taunton). William and Sarah were married on 6 Nov 1666, in Marshfield, MA. William's father was John BRIGGS, but I do not have the name of his wife--some say Hannah and others say Katherine???