For those of you searching for Samuel, here's the Samuel that I have:

Samuel Hennis (parents Samuel Hennis and Catherine unknown) was born 1824 in Ohio. He died in 1904. By 1880, Samuel was a farmer, living in Short Creek, Harrison Co, Ohio. Samuel's parents were born in PA (Samuel Sr. in 1790). Samuel married Matilda Swallow, who was born in 1838 in Ohio. Matilda died 4/13/1885, at the birth of her 12th child. Their children were:
George (2/25/1856, Harrisville, Harrison Co, Ohio - 9/20/1925)
Rebecca (1858 Ohio)
Elisabeth (1862 Ohio)
John W and Jane (1864 Ohio)
Emma (Aimy) 1867 Ohio
Franklin S. (Frank) 1869 Ohio, died 1902
Parks (1871 Ohio) died when thrown from a horse on his way
to college in New Athens, Ohio
Susan (Susie) 1874 Ohio
Ross Etta (1876 Ohio)
Max (Mac) btwn 1880-84 Ohio
Morland St. Clair (4/13/1885 Harrisville, Harrison Co, Ohio,
2/1963 Farmington, WV)

As for the children of Samuel Sr. (1790, PA) and Catherine (1807, PA), I am less sure, but I believe them to be:
Samuel (1824-1904)
Anna (1821)
Elizabeth (1824) all born in Ohio.
Others have suggested that Parks and Benjamin (1820) are also their children.

Let me know if this relates to those you are searching for, and if so, if it matches what you have. I have much information on Samuel's descendants.