Thank you so much, that is helpful. I do think my GGGFather James Allen is the eldest son of Joseph Allen and Mary Biggs Allen. James would have left Pennsylvania before 1820 because he ended up in Illinois about then. He married Sarah Moore Heard in Illinois in 1825. His two children born in Illinois were named Joseph and Marium. James was a tanner and Joseph, his likely father, was a tanner. James died in 1846 in Illinois. The Y-DNA match links us closely to that Allen family. Thanks again for your response.