Wojowciewski does not exist in Poland. It is possible linguistically, but if it ever existed it was surely on the rare side.
Wojciewski would be more like it. It comes from the first name Wojciech but most likely originated as a topo nick from places such as Wojcieszyce, Wojciechy, Wojcieszyn or similar.
For 123 years between the late 18th century and 1918 Poland did not exist as an indepndent country, having been carved up by Russia, Prussia and Austria. Tsarist Russia had annexed the largest chunk of Polish territory. Poles coming to America in that period bore passports of that parttioning power which ruled their native region.
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