The name Ratzke is not a family name located at west Prussia, the origin is in Slavia (Czech republic), and is derived from Ratzlaff (Andreas Raczlaw, Budweis 1395 ). One of my family (Johann Ratzke, * 18 Century)  was found at Neuguth, a small town, which you can find in East Pomerania. Today it is a polish place called Wies.

Quelle: ancestry.de – © 2006 Brockhaus Duden Neue Medien GmbH, Mannheim