"Variant of Tamara"
The name Thamara is commonly a female name from the "Russian" origin.
Thamara is a spelling variant of Tamara, the form of the Hebrew name Tamar that appears in Greek sources and in Portuguese-speaking countries. The initial Th- represents the Greek practice of writing the Hebrew tav with theta, so the spelling changes the letters but not the name. It is first recorded in US birth records in 1973, when the Tamara spelling was also in use.
Tamara means "Palm tree, Pigeon; Well-polished jewell.".
The pronunciation of Thamara is tuh-MAR-uh.