Benjamin S. Allen of Bourbon County, Kentucky is NOT an ancestor in my family tree. However, his estate inventory might help descendants of some of his enslaved persons as he died near the end of the Civil War.

Ben, as he was called, is found with his family in the 1860 census of Bourbon County.

1860 Census, Bourbon County, Kentucky
Source: Ancestry

Ben Allen, 64, born Georgia
Margaret, 37, born KY (if her age is correct, this would be a daughter. If age is 57, then she is his wife, Margaret Coil, married 17 April 1830 in Bourbon County, KY)
W.H., male, 22, born KY
James B., 19, born KY
Margaret, 16, born KY
Elijah, 13, born KY
Jno., 11, born KY
Belle, 8, born KY
Alfred, 5, born KY

Here is his inventory, dated September 1864 and recorded on 5 February 1865:

Benjamin S. Allen Estate Inventory
Bourbon County, KY Will Records R: 32-33
Source: FamilySearch

The pertinent portion of Benjamin’s inventory is the bottom section of the left page;

“Slaves” Bill 200 Tom 150 Henry 200 Frank 250                   800.00
Willis 50.00 Emmanuel 200 Mitchell 200 Dennis 200       650.00
Adam 200 Saml 100 Emily 250 Sharlott 250                           800.00
Julia 150.00 Molly 150 Fanny 100 Lizzie 50                            450.00
Nancy 100 Sarah 250 Child not named 16                                366.00

Ben Allen appears in the 1860 census slave schedule:

Ben Allen, left column, 20 slaves
Source: Ancestry

More research needs to be done to account for 20 enslaved people in 1860, but 19 in the inventory four years later, one of whom is a newborn child.

Be aware that I had to manually read the 1860 census slave schedules, as no hits came up for any Allen in Bourbon County, Kentucky.

However, this is a start to piecing together possible enslaved ancestors who were part of the estate of Benjamin S. Allen.