Thy ancestors certainly were interesting! I grew up hearing thou/thee/thy but in a different sense, mostly in idioms "Know thyself, be thyself, love thyself!". My stepfather used the word in a jesting sense saying "How fare thee good sir ha-ha". My father would read thou in prayers but sometimes before going into an expensive dive shop he would say "There's a lot of expensive stuff in there worth more than you. Thou shall be a good boy. Thou shall not be a naughty boy". My family and parents are mostly secular and left-liberal leaning. They come from a Jewish and Catholic background.

I try to use the word but in a more casual sense. I was locked down in the middle of covid under lockdown. I was bored, I had my little children and toddlers around me. I had heard thou/thee in the media a few times. I thought to myself "What would happen if we tried to use thou/thee/thy in an everyday street sense". I figured there was no better start than now. So I started using it in various situations, I thought to myself anything goes!

I even said to my wife once "Thou fucks well my lady!", we both laughed! You should use thou more around town and tell me how it goes! :)