![Arms of the Polish–Lithuanian Commonwealth](http://upload.wikimedia.org/wikipedia/commons/thumb/5/53/Herb_Rzeczypospolitej_Obojga_Narodow_%28Alex_K%29.svg/100px-Herb_Rzeczypospolitej_Obojga_Narodow_%28Alex_K%29.svg.png)
The tradition and practice of heraldry in Poland dates from the 13th century. Although influenced by French and German heraldic practice, differs in a number of respects. One of the most striking is that a coat of arms does not belong to a single family. Many, sometimes hundreds of unrelated families may use a single coat of arms. Each coat of arms also has its own name. One side-effect of this unique arrangement was that it became customary to refer to members of the nobility (Polish: Szlachta) by both their family name and the name of their coat of arms. (more...)