Ed,

Have you searched records for INOWROCLAW at:
https://www.jewishgen.org/databases/Poland/

You can search by town name or by surname.

Regards,

Sherri Bobish

Ed:  I cannot help directly, but I am aware of contemporary JOEL family from Inowroclaw -- Simon JOEL and his wife Caroline ARONSOHN who had at least two children: Selma ( b.1865, Inowroclaw) and Arthur (b.1869, Inowroclaw).   Selma has descendants, some of whom may still be in Australia.  Jacob and Simon seem like they could have been contemporaries, unless Joel and Dora arrived in the US with adult children.

All the best,
Stephen Falk
Point Roberts, WA, USA

My g.grandparents were Jacob JOEL and Dora FRIEDLANDER.  Jacob arrived in NYC in 1856.  The manifest listed his last known residence as INOWROCLAW, then in Prussia, now in Poland.  Dora arrived iin 1857 on the BORUSSIA sailing from Hamburg.  I and my cousins cannot find anything on them before that.  Any help would be appreciated.
Ed Frank
Sun City Center, FL