Plevaka (m) -- var of Plevako. 

Plevako (m) -- Afanas Plevako, Minsk craftsman. 1592. 

[Tup 305], Vars: Plevaka (peasant*). Recorded in 1606**. [Tup 305] 

Tup = Tupikov, N. M. Slovar' drevne-russkikh lichnykh sobstvennykh imen.  

Saint Petersburg: Tipografiia I. N. Skorokhodova, 1903.

var = variant spelling

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*/ Squire, not peasant - see Wywod Familij  

**/ Nikolai Plevaka and his son Bartlomiej Plevaka with their wifes sold his property Krivici