What is "mkheidze"

Mkheidze , originally Mkhetsidze , also Pkheidze , Kheidze , Mkhetsia , and Khetsia , is a Georgian noble family, known from the eleventh century. This house, centered at the western district of Argveti, has survived to the end of the Georgian kingdoms and the Russian Empire which granted them recognition of their princely title (Georgian: tavadi, Russian: knyaz) in 1850.