Coat of Arms & Family Crest Details
J. B. Rietstap, Armorial Général, Gouda: G. B. van Goor Zonen, 1884–87
Blazon (the actual original written record)“Bandé de gu. et d'arg. Cq. cour. C.: trois pl. d'aut. d'arg.”
A record of documented arms, meaning and origin, researched for the Kois family of Poland.
J. B. Rietstap, Armorial Général, Gouda: G. B. van Goor Zonen, 1884–87
Blazon (the actual original written record)“Bandé de gu. et d'arg. Cq. cour. C.: trois pl. d'aut. d'arg.”

The Kois arms were recorded in Poland, c. 1772.
Arms such as these were typically recorded in Mazovia.
Mazovia held Warsaw, the Polish court and the assemblies where the szlachta met. Poland's nobles were unusually numerous and every one of them bore arms, and Warsaw is where those arms were argued over and recorded.
This is where the arms were entered in the register. Families often moved to other parts of the country, so the same name can turn up in more than one region.
Polish noble families shared a single coat of arms across many different surnames, creating large clans rather than individual designs. These symbols were held collectively by all members of the clan regardless of their specific family name. When a new family joined the nobility, they were adopted into an existing clan and began using that group's established shield.
The history of the Kois family name is deeply rooted in the historical region of Mazovia, where records confirm the presence of family members as early as 1772. During this period, Mazovia was a central part of the Polish-Lithuanian Commonwealth, a time characterized by significant social and political shifts. Families in this region often lived in rural communities where surnames were closely tied to local landholdings or specific ancestral trades. The name Kois likely emerged as a descriptive identifier within these tight-knit village structures, reflecting the distinct linguistic patterns of the Mazovian dialect. As the family grew, they maintained a presence in the local parish registers, which served as the primary way to track births, marriages, and deaths in the eighteenth century. These early generations helped shape the local culture of the region, living through the turbulent transitions that eventually led to the partitions of Poland.
A derivative of the verb kojarzyć meaning to connect or associate.
