George Harlan, Quaker lifestyle, Born in late 1800's.

Hello.I don't know much about my ancestry, but I'd like to know who some of my relatives were. Who more of my cousins are.
My ggrandfather is George Harlan who lived in Coatesville, Indiana in the 1800's, and died about 1960 or so. His children are Rebecca Elizabeth Harlan, James Boyd Harlan (Uncle Dick.), and Aunt Corie (Cora?). My great aunts and uncles, etc. There are other siblings I didn't know personally, or even their names. (Mary M. Harlan and I think possibly an Aunt Linie?) And others?Rebecca Elizabeth was also called Polly.She married Charles Rudolph Hughey.
Is there a strong chance my gggrandfather is Enoch Harlan born in about 1832? (I think there was also another George Harlan who lived in Coatesville about the same time as my ggrandfather he could be accidentally connected with?)Thank you. Anna McIntosh