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Cognomen Gervas (Gervas , 杰维斯 , Гервас ) , in the world, is a common last name. The cognomen Gervas is characteristic of Tanzania, where it is quite a common surname, Uruguay, where it is a rare surname, and Georgia. Measured by absolute frequency, it is the most numerous in Tanzania, Philippines, and Ukraine. Likewise, Gervas is the forename as well as the last name.