.  Joseph LEWIS, Jr.; m1. Sarah WILLIAMSON; m2. Anne (PORTER) SAMPSON
.  Mary LEWIS; m. James COCKE, Jr.
?  Susannah LEWIS
.  (Child) LEWIS; died young

Historically, women have married at an average age of 19, so I've made the daughters' birthyears 19 years before their marriage dates — it's as good a guess as any, and everyone is guessing.  We just plain don't know exactly when the children were born.  Given the age of his daughter (b. 1751), William had to have been born by 1730.

.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

Source: none given Father: Joseph LEWIS; Mother: Sarah COCKE Birth: <>, Goochland, Virginia	. William LEWIS, Abt. 1730 . Sarah LEWIS, Abt. 1735 . Ann LEWIS, Abt. 1737 . Susannah LEWIS, Abt. 1740
Source: LDS Film #445772 [patron submission] Father: Joseph LEWIS; Mother: Birth: Goochland Co., Virginia	. Ann LEWIS, Abt. 1741
Source: LDS Film #456645 [patron submission] Father: Joseph LEWIS; Mother: Mrs. Joseph LEWIS Birth: Goochland, Virginia	. Sarah LEWIS, Abt. 1739 . Ann LEWIS, Abt. 1741
Source: LDS Film #1903632 [patron submission] Father: Joseph LEWIS; Mother: Sarah COCKE Birth: Henrico Co, , Virginia	. Elizabeth LEWIS, Abt. 1743 . Sarah LEWIS, Abt. 1745 . Ann LEWIS, Abt. 1748
Source: LDS Film #1903801 [patron submission] Father: Joseph LEWIS; Mother: Sarah COCKE Birth: Henrico Co, , Virginia	. William LEWIS, Abt. 1736 . John LEWIS, Abt. 1738 . Joseph LEWIS, Abt. 1738

.  LDS.  Family Search: Internet Genealogy Service: Pedigree Resource File (index to CDs, online at FamilySearch.org).

Source: Compact Disc #25 John LEWIS major Birth: 13 Oct 1729; Place: Goochland, VA Death: 1796; Place: Goochland, VA Father: Joseph LEWIS; Mother: Sarah COCKE Spouse: Mildred LEWIS; Marriage: 1755 susannah LEWIS Birth: abt 1735; Place: Father: Joseph LEWIS; Mother: Sarah COCKE Sarah LEWIS Birth: abt 1737; Place: Father: Joseph LEWIS; Mother: Sarah COCKE

.  W. Mac Jones. 1927. "Index to Goochland County Wills, Etc., L to W."  Pages 133-143 in (1993) Virginia Will Records... Genealogical Publ. Co., Baltimore, MD (Broderbund CD-174):

p. 133

Lewis, Joseph (W), D.B. 13, p. 325, 20 Oct., 1783.

.  Messages posted to the ROBARDS Family Genealogy Forum (online at GenForum.com), in particular, a post by Kay Schmidt:

Regarding the marriage of Joseph LEWIS Sr to Elizabeth PLEASANTS, page 16 of "Cockes and Cousins" by Virginia W. Cocke quotes a letter dated 13 Jun 1956 by Katharine Cox Gottschald that says: "... I believe that through the build up of several records it is proven now to my satisfaction that the JOSEPH LEWIS who died testate in Goochland Co., 1783, did marry Elizabeth Pleasants, the daughter of Joseph and Martha (Cocke) Pleasants and that their daughter Mary married James Cocke and had two daughters ... one daughter SARAH LEWIS COCKE ... for the paternal grandmother Sarah (Lewis) Cocke ... another daughter ELIZABETH PLEASANTS COCKE ... for her MATERNAL grandmother Elizabeth (Pleasants) Lewis."

.  LDS.  Family Search: Internet Genealogy Service:  AF - Ancestral File (online at FamilySearch.org).

There is a Joseph LEWIS in the AF said to be the son of Joseph LEWIS, to have been born 1742 in Goochland Co., VA, to have been christened 23 Dec 1748 in Charles Co., MD, to have married Catherine LACY in 1769 in Elizabethtown, NJ, and to have died in Union Co., PA.  The only thing plausible here is that the man christened in MD might have died in PA or that the man who married in NJ might have died in PA — otherwise, you've gotta be kidding!