My main interests are railway history, Welsh subjects and local history. I contribute mainly to the Welsh language version of Wikipedia, and am also beaurocrat for a small local history wiki in Welsh, https://cof.uwchgwyrfai.cymru , that uses Wikimedia software, Initially, because of restrictions by the main funder (Heritage Lottery Fund) we could not use the normal CC-BY-SA licence, but has to limit content (very frustratingly) to CC-BY-NC. Thankfully this has been changed and we can now licence all our material (unless subject to the rights of others) to CC-SA-BY 4.0.