Heraldry
See Polish heraldry
Belarusian aristocrats had their family symbols already in the 14th century. One of the privileges introduced to the gentry by the Union of Horodlo was the usage of Polish (sometimes modified) coats of arms.
There are about 5 thousands coats of arms of Polish, Belarusian, Lithuanian and Ukrainian szlachta.
Read more about this topic: Belarusian Nobility