Hi Nigel. Andrew is correct. The trees you are looking at especially Ancestry are incorrect and join two Wind lineages. They assume William Wind born 1731 is the only William Wind and this is incorrect. Please look at Wikitree as it is currently the only lineage that is closest to reality as far as we can be sure as these are confirmed sources. Note that there were two Thomas's to father Thomas, one died early born 1870 died 1871, the 1875 is the correct one. Look carefully at Andrews answer and check the Wikitree profile.The Waldridge Thomas is correct. I understand it's confusing, but it is slowly resolving.