My wife going to do it now. Need a certified translation, and brought to my embassy for verification, then register at local ampur. If she do not need the marriage registered, she only her I'd card to change her name to mine. But, read carefully, she will need to change everything to the new name, house reg, bank cards, accounts, insurance, car, motorbikes reg, passport,,,,,,
We had a discussion on it, and we will see
https://thailawonline.com/en/family/marriage-in-thailand/changing-name-at-marriage.html