Heinrich Oswald Schendel from Posen born 1894

First execuse for my bad english.
I came here by searching for my mothers maiden name Schendel.
All i know about my mothers parents is:

Her Fathers name was Heinrich Oswald Schendel, he was born in Rogasen Prov. Posen (today Poland)at 02.08.1894.
His fathers name (my mothers grandfather) was Eduard Schendel and his wifes name was Pauline (maiden name Kubatzki).

Her mothers name was maria born at 22.10.1910(maiden name Zimmermann).Her parents (my mothers grandparents) were Richard and Gertrud (maiden name Kattepoel (netherlands))Zimmermann. They lived in Emmerich and were furniture dealer.

What i also know is that my grandfather Heinrich Oswald Schendel had many brothers and sisters and Maria was his second wife.

Thats all i know but i want to know more about my mothers family. i´ve read the postings to the schendel family and i think that many ways leads to Posen.

Thank you very much for more information !