trying to verify marriage Malecki/Yarck

My g-grandfather was Michael Malecki. The info I have, I received from a cousin doing family research had his birthdate as Oct 1832 in German part of Partition.

My g-grandmother was Ludwika Yarck, born Aug 1852, also from German part of Partition.

I have been searching everywhere and cannot find parents for either Michael or Ludwika.
They came to the US in 1881. When they did, they had 2 children, Michail and Frances.

I found a marriage record (the only one) at the Poznan Project for:
Michael Malecki and Ludovica Jarecka in 1869 in the Nietrzanowo Parish.

US census records had their marriage around 1870. Ok, good so far. But Ludwika's name, could Jarecka and Yarck be the same?
Could this possibly be my g-grandparents?

This is one brick in my dad's side that I would love to conquer. Any help would be fantastic!
thanks,
Donna

Yarck is definitely not a Polish name but it's quite possible that somebody arrived to it trying to write Jarecka phonetically in English.
BTW, the Polish versions of Michael and Ludovica are Michał and Ludwika.

Ok, I thought that the names could have been interchangeable. If I remember, the census records showed that Ludwika only spoke polish, so as her maiden name got passed down, it became Yarck instead of Jarecka.

Now to figure out if this is, in fact, her marriage record. Does anyone know if this parish was ever part of the German part of Partition?

Yes, this part of Poland was under the German rule in the 19th c.

en.wikipedia.org/wiki/Nietrzanowo

And here's the parish site: nietrzanowo.archpoznan.org.pl/aktualnosci/glowna.htm