William vickery castlehaven

Hi im trying to find out more on william vickery(protestant ) , he was born 1839 castlehaven  and married julia scholl from switzerland, on thier marriage  cert from 1871 skibbereen they were in castletownsend in the 1901 and 1911. It gives father of the groom was also william vickery  and he was a gardner. My cousins  dna on ancestry a few days ago says were descendants of john vickery 1716 bantry who married catherine swanton born 1726 , trying to join the middle piece , would i be able to get a birth cert for william his mothers name may help.