Where does “Мазов” come from?

Мазов (Bulgarian) comes from Bulgarian -ов, from Old East Slavic -овъ, from Proto-Slavic -ovъ — of, belonging to.

Ancestry of “Мазов”, step by step

StepLanguageWordMeaning
1Bulgarian-ов’s, -son, -s
2Old East Slavic-овъ—
3Proto-Slavic-ovъof, belonging to
Every word from Proto-Slavic -ovъ →Every word from Bulgarian -ов →Every word from Old East Slavic -овъ →
Мазов — Etymology, Origin & Word History | Etymology Explorer