Benjamin was born about 1805. Benjamin Rotrock ... He passed away about 1854. 
No more info is currently available for Benjamin Rotrock. Can you add to his biography?
"Ohio, County Marriages, 1789-2013," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XD4X-KPG : 8 December 2014), Benjamin Rotrock and Elizabeth Ingersoll, Sep 1824; citing Pike, Ohio, United States, reference 87-131; county courthouses, Ohio; FHL microfilm 292,748.
It may be possible to confirm family relationships with Benjamin by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Benjamin: