What a great find!!Good work.I'm still not convinced that he died abt. 1866/68.I found a David R Markey living in Penn.The D.O.B. is approx. the same as our David R. Markey.This was from the 1880 Census.Also, I was given a picture of Franklin Pierce Markey and came across another picture of him only the 2nd picture is with a woman (Emily)?? and she is holding a son, and David R Markey has his arm around a little girl.If your interested, I could try to have them copied and sent to you but I can't find your address.