When I first heard it I thought it might be
Therese (with the English pr.). I assumed they didn't know how to spell it. But I saw it written down and heard them say it and it was spelled Trease sounded like TREEZ. I thought it was a bit weird it makes me think of "tease".
I googled it and apparently it's a surname so maybe they were honoring someone. For some reason it made me think of the name
Brooke only that I find
Brooke much prettier.