I think I read somewhere that the Radtke's come primarily from the West Prussia area. Am I correct in understanding this?
More importantly, I know that my great-grandfather (Herman Kleimann) was married to Wilhelmine Radtke (born in Frischenhafen?). I have no dates, other than that Herman Kleimann was born possibly in 1875. Also, it is quite possible that they lived near Konigsberg (Lowenhagen?), with their offspring being Herbert, Benno, and Hertel Kleimann.
Anything that rings a bell here, or any help, would be greatly appreciated, as this is a small world.