10 Mar 2008: Finally some evidence has been found of him in Lancaster County!!
From Chapter "Caveat Book - 2" page 286 {see Caveat.jpg}
Land Office 20 March 1764
Archibald Sloan enters a Caveat against the acceptance of a Survey made for Samuel Sloan, on a Tract of Land Situate in Hanover Township, Lancaster County, the said Land settled & improved by Archibald Sloan, Father of the said Samuel who is since Deceased Intestate leaving other Children besides the said Samuel. William Peters, Sec'ry.
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Supposedly, his son John arrived in America abt 1718 from Co. Antrim, Ireland.
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Sources:
1. Copy of his son's [Archibald Sr.] will. son was living in Rowan Co. NC. at time of death.
2. Son, Samuel Sloan's will in Lancaster Co. Pa. [children]
3. Pennsylvania Archives, Series 3, Volume 2. "Minutes of the Board of Property and Other References to Lands in Pennsylvania. Including Proprietary (Old) Rights," Harrisburg: Clarence M. Busch, State Printer of Pennsylvania, 1894. Chapter "Caveat Books, 1748-1784: Book 2"

1. John Sloan b: BEF 1715 in Co. ANTRIM, Ireland
2. Samuel Sloan b: ABT 1718 in Ireland, Scotland, England or LANCASTER Co. PA.
3. Archibald Sloan , Sr. II b: ABT 1719 in Ireland, Scotland, England or LANCASTER Co. PA.
4. James Sloan b: ABT 1720 in Ireland, Scotland, England or LANCASTER Co. PA.
5. Elizabeth Sloan b: BEF 1731 in LANCASTER Co. PA. ?
6. William Sloan b: ABT 1734 in LANCASTER Co. ? PA. ?
7. Mary Sloan b: ABT 1736 in Ireland, Scotland, England or LANCASTER Co. PA.
8. Joseph? Sloan b: BEF 1745 in LANCASTER? Co. PA?

1. Title: Sloan, Robert Duane
   Publication: Email Correspondance - 1 Nov 2007 - 10 Mar 2008
   Note: http://www.myheritage.com/site-194701/sloan-family-tree-web-site
   Repository:
   Note: SloanRD.doc: F Line
   Media: Letter
   Page: Ref. Chapter: "Caveat Book-No. 2." PA. Archives, Series 3, Vol. 2
   Text: [dec'd by Mar 1764]