Swelinia - [svɛ"ɭiːɲa], also known as "Swelina" or (in German) "Grenzfluß", is a name of a brook between Northern part of Sopot and Southern Gdynia (Poland). Original slavic name "Swelinia" occurred first time in documents from 13th century ("Rivulum qui Swelina dicitur", "a cree...