From Wikipedia, the free encyclopedia
Mściwój I (Mestwin I or Mszczuj I) (born 1160, died 1/2 May 1217 or 1220) was a prince of Eastern Pomerania in years 1207-1220.
Initially he was a prince of the district of Białogard, and later he succeeded his brother Sambor I as a prince of Gdańsk.