I looked in York today and found John Collins in Huntington Twp 1772-1795, John Collinns in Manchester 1795, John Collins in Hopewell 1795, John Collins in York Twp 1783 and 1795 and john Collins in York Town 1778-1795.Found David born 1803 to John and Margaret.
John of Hopewell died 1842 and his wife Margaret died 1847.
Found various John Collins born 1743, 1792, 1781. Found John married Mary Bevan 1757, John who left York before February 1770, a John in York Springs in 1760 and a John who died 27 May 1819.
Any of these who you are looking for?
I did not find an Aaron