Well do you have the names of your direct connection to them?? Your parent, grandparent etc to connect to them. That would assist in determining if they are yours. The wife's name of that William seems to be listed as May. But there are children listed so if you had names it might help. Also, the pension application for this Wm Davis shows he was dead by 1890 and the wife did apply and was approved but without the papers to see names etc, not much else can be determined.