7 surname Tvaroch listed in SSDI.
Mainly from OH.
If related to any on list, you can Write Letter under Request.
Copy of SS application form SS-5 usually lists town of origin,
parent's names, and mother's maiden name.
You need town of origin to research surname in possible European records.
Tvar means form,shape in Czech/Slovak.
Tvaroh means curds (as in curds and whey) in Czech/Sloavk.
The last Slovakia census listed the surname Tvaroch, but I don't know
where ?