Changes pages have father as
https://www.wikitree.com/wiki/Thornton-3136
red locked several years ago
This profile appears that it should most likely be opened. I would try emailing wikitree And seeing about getting it opened for collaboration. If this is indeed the father of someone born in the late 1700's
To what I understand
Privacy levels for
Open - Anyone can view the full profile and any member who has signed the Wiki Genealogist Honor Code can edit it. Required for people born over 150 years ago or who died over 100 years ago.
Best of Luck