Sypniewski is a Polish surname centered on the Oder region where families bearing this surname are still found today. Sypniewskis can also be found all over the world, particularly in the United States, Brazil, and Germany.

Odrowąż is a Polish coat of arms of probably Moravian origin. It was used by many noble families known as szlachta in Polish in medieval Poland and later under the Polish–Lithuanian Commonwealth, branches of the original medieval Odrowążowie family as well as families connected with the Clan by adoption.