Individual Details

Ralph III married Hannah ??? and settled in Charlotte Co VA. They are believed to have had a daughter Phebe who may have married a Sampson Power, although the Jackson book just gives "Mr. Tower".

It is possible the above is inaccurate. Ralph Jackson III seems to have married an Obedience (surname unknown) who left a will in Chestefield County, as Obedience Mann, dated 8 May 1788. She made bequests to daughter Edey Mann, daughter Lucy Jackson, daughter Martha [Jackson] Cashion, daughter Betsy Jackson - if Betsey dies without an heir her part to go to granddaughter Sarah Cashion. Ezekiel Perkinson and Archibald Mann, Executors. Signed Obedience (+) Mann. wit: Benjn. Smith, Nanncy (+) Perkinson, Francis (+) Mann
[LDS Film #7644375, img 173, Chesterfield Co, VA, Will Book 4, p.166-7]
Her undated inventory and appaisal is on p. 220 - the following inventory is dated in June of 1789.

Lucy Jackson left a will dated, 23 Feb 1795, in Chesterfield Co, as well. she names her brother-in-law, Archibald Mann, son stewart Jackson, sister's daughter, Prissy Mann, sisters Edith Mann and Betsy Jackson. Archibald Mann to be executor.
Lucy signed with her mark. Wit: Ezekiel Perkinson, Abel Moore, Micajah (+) Traylor
[Will Book 4, p. 485-486, img 504]

Father	RALPH JACKSON Jr. (1695 - 1776)
Mother	OBEDIENCE [JACKSON] ( - )
Sibling	FRANCIS JACKSON Sr. (1722 - 1792)
Sibling	Joel Jackson (1736 - 1795)
Sibling	Lewis JACKSON ( - 1795)
Sibling	Simon Jackson ( - )