What is "mammadbeyov"

Mammadbeyov (, also Mammadbeyova for females, sometimes encountered in Russified spelling Mamedbekov) is a surname of people of Azeri origin, which consists of three elements: Mammad (reduced form of the male name Mahammad), bey, a title of a chief or a landowner, and the Russian ending -ov.

It is the name of a noble family of Azerbaijan.