.  Robert K. Headley, Jr..  c2003.  Married Well and Often: Marriages of the Northern Neck of Virginia, 1649-1800: Marriages and Marriage references for the Counties of Lancaster, Northumberland, Old Rappahannock, Richmond, and Westmoreland.  Genealogical Publ. Co., Baltimore, MD (online at Ancestry.com):

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p. 321	SLAUGHTER, John (wid.) & SUGGETT, Elizabeth; b. 18 Dec 1758; Jn. SUGGETT (sec.); groom was a son of Francis & Anne (LIGHTFOOT) SLAUGHTER; this was his 2nd marriage; bride was a dau. of Edgecomb SUGGETT (d. RC, 1753); (RC DB 12:550; WB 6:6; MLB RC; MRC:189)
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.  William Armstrong Crozier, ed.  1905.  Spotsylvania County Records, 1721-1800 (reprinted 1965, Genealogical Publ. Co., Baltimore; online at Ancestry.com):

p. 84

MARRIAGE LICENSES From "An Account of Ye Governor's Dues," Order Book 1 1729—June 3, Francis Slaughter and Ann Lightfoot.

p. 105

DEED BOOK A — 1722-1729 Feby. 3, 1728.  Thomas Slaughter of Caroline Co.; Francis and Robert Slaughter of Spts. co., to Augustine Smith of Caroline Co.  £100 ster., 288 a. in Spts. Co. on both sides of Black Walnut Run—granted to Robert Slaughter, father of the sd. Thomas, Francis and Robert Slaughter, by pat. June 30, 1726.  Witnesses:  Jo. Taliaferro, G. Lightfoot, Abraham Field.  Rec. Feby. 4, 1728-9.

.  George Norbury MacKenzie.  1907-12.  Colonial Families of the United States of America.  7 vols.  Vol. I by Grafton Press, New York; Vols. II-VII by Seaforth Press, Baltimore, MD (republ. 1966/95 by Genealogical Publ. Co., Baltimore, MD; Broderbund CD-189; online at Ancestry.com):

v. 5 p. 460

COL. FRANCIS SLAUGHTER, b. in Essex County, Virginia, 1701; d. in Culpeper, 1766; Captain of Militia, later Colonel, Justice, Vestryman and Church Warden; m. 3d June, 1729, Ann LIGHTFOOT, of Spotsylvania County, Virginia, b. 22d Sep-

p. 461

tember, 1708, d. 1748, dau. of Major Goodrich and Mary (CHEW) LIGHTFOOT, he the son of Col. John LIGHTFOOT, the immigrant, who m. Ann GOOODRICH (sic).  Col. John LIGHTFOOT, Member of the Virginia Council from 1692 until his death, 28th May, 1707, Commander-in-Chief of King and Queen County, was the son of John LIGHTFOOT, of Gray's Inn, London, and Elizabeth PHILLIPS, his wife, and the gd. son of the Rev. Richard LIGTFOOT, of Stoke Bruene, Northamptonshire, England, b. 1562, d. 1625, who m. Jane JONES.  Ann GOODRICH was the dau. of Lieut. Gen. Thomas GOODRICH who was in command of the troops in Northern Virginia during Bacon's Rebellion, the son of John GOODRICH, the immigrant, and gd. son of Sir Richard GOODRIGH and Muriel his wife of Goodrich Castle, Hertfordshire, Wales. ISSUE     I.   Francis.   II.   John.   III.   REUBEN, b. 1733 of whom later.   IV.   Cadwallader.   V.   Frances, b. 1737; m. Capt. Wm. BALL.   VI.   A dau, m. Edward THOMAS ...

.  Louise Pecquet du Bellet.  1907.  Some Prominent Virginia Families.  J.P. Bell, Lynchburg, VA (reprinted 1976 by Genealogical Pub. Bo., Baltimore, MD: online at Ancestry.com).

.  Mary Denham Ackerly & Lula Eastman Jeter Parker.  c1930.  Our Kin:  the Genealogies of Some of the Early Families Who Made Histor in the Founding and Development of Bedford County, Virginia.  J.P. Bell, Lynchburg, VA (online at Ancestry.com):  this is the most fact-filled genealogy -- need to extract.

1a.  LDS.  Family Search: Internet Genealogy Service:  AF - Ancestral File (online at FamilySearch.org).

1b.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

1c.  LDS.  Family Search: Internet Genealogy Service: Pedigree Resource File (index to CDs, online at FamilySearch.org).

2.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).