 For example, "посольский дьяк" ("posolsky dyak") is a "dyak" of the "Posolsky Prikaz" (Diplomacy Department).A duma dyak (думный дьяк) was the lowest rank in the Boyar Duma (15-17th centuries).Outside of the grand princely administration, dyaki were also found in ecclesiastical (episcopal) administrations, particularly in Veliky Novgorod.