Surnames separated by a small r #galicia

Dorcey Rose

I am curious about surnames in the Galicia archives from Zablotow area, for example, Reischer r Kessler. What does the little r stand for? Could it be Reischer son of Kessler? I have seen this quite a bit in archives from the area. Thanks so much. Dorcey
Dorcey Rose
Florida US

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