From Deane’s History of Scituate:6

   “David came to Scituate 1688, when he purchased the lands of George Russell, (his uncle), on the southeast of Stockbridge's mill, the ancient Stedman place. His house stood near where stands the house of Mr Samuel Hatch, his descendant. That Russell house was burnt 1712, and another erected near the same place, which has been succeeded since by the spacious mansion of Mr Hatch. Dea. David Jacob was an active and useful man, always employed in publick business, and often also as town schoolmaster, there being but one school at that time.”

David ws the first master of the only public school in Scituate until 1712. In 1701 ‘The Town agreed with Dea. David Jocob to keep a reading, writin and grammar school for one year, in consideration of the sum of £20; also agreed with the same person to build a school house for £20.’ This schoolhouse stood between Jacob’s house and the Stockbridge mill.7

David Jacob was a Deacon of the First Church during the time of the controversy over building a new meeting house elsewhere thanupon the site of the earliest one on Meeting House Lane. The second house on ‘the gor of land’ near Balch’s (now (1936) the Town Common at Scituate Centre) was erected before his death.7

On 20 Dec 1689 when David was 25, he first married Sarah Cushing (3948) , daughter of Col. John Cushing Esq. (1092) (ca 1627-31 Mar 1708) & Sarah Hawke (1388) (ca 1641-9 Mar 1678/9), in Scituate, MA.116 Born on 26 Aug 1671 in Scituate, MA.2 At the age of <1, Sarah was baptized on 27 Aug 1671.48 Sarah died in Scituate, MA, on 24 Sep 1723; she was 52. Buried in First Parish Cemetery, Scituate.

John Cushing, Sarah’s father, also recorded the marriage in his account book: “David & Sarah maried 20 december 1689”.63

According to Cushing48, Sarah died 8 Aug 1701.