The fact on Jacob Keller being a doctor is incorrect. Jacob was a farmer and he was born in 1775. He died in 1841. He married Rosanna/Rosina Doub (1786/1851) in 1807. His SON, Daniel Keller, was a doctor born in 1808 and died in 1874. Daniel married Mary Ellen Ward (1827/1881) in 1853. Daniel is my great-great-grandfather. Jack Keller