Biography of Samuel Clark

My Clark family received a little attention. I have fleshed out the bio of Samuel Clark [c1750 PA - 1820-26 OH] and done some minor editing on his son, Isaac's bio.

Samuel Clark:

According to the biography of F.M. Clark in Commerative Biographical Record of Prominent and Representative Men of Indianaapolis, Samuel Clark was the father of Isaac and was born in Pennsylvania. Samuel's father was Isaac Clark, who came from England about 1731. The elder Isaac settled in Pennsylvania and engaged in farming.
Samuel grew up in Penn's Colony and eventually migrated to Maryland. F.M. Clark's bio claimed that Samuel went to Butler Co., Ohio from Maryland, but other sources place Samuel in Kentucky before moving to Ohio. His son, Isaac's place of birth is variously given as Maryland or Kentucky.
 A Samuel Clark was taxed in Nelson Co., Virginia [later Kentucky] in 1786. He was taxed for one white male and one horse. I t is likely that Samuel married in Nelson Co. and that his only known son, Isaac was born there. All that is known about Samuel's wife is that her first name was Martha. They probably married about 1790, as Isaac was born in the spring of 1792. He was on the Nelson Co. tax lists until 1795.
Exactly when Samuel moved to Ohio is not known. The name Samuel Clark appears on the 1800 cesus for Ohio, NW Territory.  In 1806, there are two entries for Samuel Clark in Butler Co., three in 1807, two in 1809 and four in 1810.
At least one other Samuel Clark resided in Butler Co., Ohio. That man married Jane or Martha Jane Doty and lived in Fairfield Twp. It is probable that Samuel was in Butler Co. by at least 1806.
Samuel appeared in deed records by 1811, when he purchased land in Sec. 12, Twp. 2, Range 3 from Benjamin and Mary Enyart. Benjamin was probably related to Polly Enyart, Isaac Clark's first wife.
Samuel was listed on the 1812 tax list for Butler Co.
Samuel and Martha sold the property purchased from Enyart in 1814. They purchased land from Jehu and Elizabeth John in 1819. [S34, T4,R1] The Clarks sold land to James Martin that same year. [S11, T2, R2] Martha signed the deeds with her mark.
Samuel and Martha were on the 1820 Census for Reily Twp., Butler Co., OH.
Clark witnessed a deed between Samuel and Mary Davis to Isaac Clark, his son, in 1820.
Samuel died sometime during the next seven years. Martha Clark married James Bartlow on 22 May 1827.
When son, Isaac, moved his family to Indiana in 1849, Martha went with them. She was listed as Martha Partlow, widow, on the 1850 census.
The marriage  record shows the name as Bartlow, but the 1850 census for Hendricks Co., IN gives Martha's surname as Partlow. Beyond the marriage, no records for a James Bartlow or Partlow have been located.
Martha undoubtedly died in Hendricks Co., IN during the 1850s, as she did not appear on the 1860 census. Her place of burial is unknown