Re: Gallitz Family in Wisconsin - 1850's

I am looking for source of Jacob Gallitz family that came to Allegany,Cattaraugus Co., N.Y. in about 1854 from Germany. Family consisted of Jacob born about 1815 died 1879.
His wife was Susanna Mohr born Aug 21, 1823 in Prussia. Married in Prussia and had 2 children before coming to USA. 1st child, Henry died,possibly at sea, second child Marcus (Mathias) was born in Prussia Oct 4,1852. Later names changed to Gallets. Have Jacob's tombstone photo. It is worn but looks like birthplace is Koblenz, maybe another shorter name before it. I don't know port of entry but they settled near the Allegheny River.
Gere Mohr