Are Singsha Bhutias of Tibetan origin?

Hi everyone, I hope this is the right place to ask.

I wanted to know if people with the surname “Singsha Bhutia” are originally of Tibetan origin. I’ve read a bit about it, but I’m not completely sure how my own background fits in.

I’ve been dealing with a bit of an identity gap since my grandparents passed away early, so I never really got to hear our family history. What I do know is that my family used to live in the mountainous regions of Nepal.

I mean no offense at all,just genuinely curious and trying to understand where I come from. I’d really appreciate any insights or shared experiences.

Thanks in advance 🙏