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Last name meaning Stoltz: Recorded as Stoltz, Stoltze, Stolze, Sztole, Stolz, Stolzer, Stolte, Stoldt, Stolt, Stoltzel, Stolten, Stolting, and possibly others, this is a famous German surname... Articles
As for Steinke, it's 'stine'. I'm not sure if there's a trick but in our family's case I believe it's the nature of being of German heritage. Now one thing that'll give the German piece away is the fact that the e comes before the i.