Early Indiana Allens from Shelbyville, Kentucky

By ``Shelbyville Allens'' I mean Allen descendants of six grandsons of Robert Allan.

Robert Allan (1695?-1769) was born in Armagh, Ulster, but by 1738 was part of the Hite Pioneers, first to settle near the Shenandoah Valley of Virginia. (Was Winchester indeed the first ``American town'' West of the Blue Ridge?) Robert had seven children:

1. Martha married Robert's stepson James Givens, and moved first to Lincoln County, Kentucky. Most genealogies do not show Martha as a daughter of Robert; perhaps she was from a first wife (her putative birth is before Robert's marriage to Deborah Montgomery), or Robert's niece, or widowed sister-in-law.
2. John's widow and family moved to Shelby County, Kentucky, founding the Allen Dale Farm.
3. Thomas's family stayed first in Virginia.
4. Robert Jr.'s children accompanied bother John's family to Shelby Co.
5. David's family settled first in Green County, Kentucky.
6. Benjamin's family settled first in Casey County, Kentucky.
7. Rebecca married John Givens, kin of Martha's husband. Some of this family may have also gone to Shelby County, but these were Givens, not Allens.

One difficulty is that ``Allen'' is a very common surname. (I envy those researching Metcalfe.) Let's consider just Allens with first name ``Montgomery.''

Montgomery Allen's

My problem is ``Allen'' is such a common surname.

At least fourteen ``Montgomery Allens'' show up in U.S. censuses 1800-1860 but these may be as few as six individuals. At least three are plainly visible in Indiana:

Montgomery Allen (1766-1835) nephew and son-in-law of Major John Allen and Anne Polk.
Montgomery Allen (1793-1863) of Ripley County and unknown parentage. (I think his mother was ``Sarah.'')
Montgomery Allen (1829-1867) of Ripley County, son of Montgomery ('93). Did he appear in 1850 Virginia census?

The other three may be

A fourth Montgomery Allen in Indiana, son of Montgomery (1766).
A Montgomery Allen (ca 1807 Pennsylvania . . ?), husband of Mary A.
An unresearched Montgomery Allen who shows up in 1840-1850 Illinois censuses. He is possibly father of Gilbert L. Allen who married Mary A. Potts.
(There also seems to be a Montgomery Allen b. 1855 Virg., son of Joseph and Elizabeth nee Carlton, who should show up in 1860 census, is he there?)