I am looking for relatives of Wreczycki family

Hi guys,

I am hoping one or more of you can help me, or at least point me in the right direction.

My grandfather "Erich Wreczycki" (DOB 02/04/1941) was born in Krakow.
He had two brothers: "Eugeniuss (DOB 14/07/1934) and "Zigmunt" (DOB 29/04/1936)

I do not know which parish they lived but I know they are/were Catholics.

Their parents were: "Stanislaw Wreczycki" (DOB 01/05/1903) and Josefa Wreczycki (10/11/1909). They were married on the 24/02/1930 in Poland. I do not know Josefa's maiden name.

This entire family emigrated to Australia in 1950 on the ship "General Hahn". I believe prior to this they were processed in a town called "Bad Follingbostel" in Lower Saxony, Germany.

I know that both Stanislaw and Josefa had siblings who survived the war and would have gone on to have their own families. I am desperate to find even the most distant of relatives and I would appreciate anyone's help but please no abuse.

I'm sorry I can't help much. Is there "Wręczycki" the original spelling of this surname.
In Poland we can find about 1 000 people with this surname : Wręczycki or Wręczycka.
And maybe is the town from which the most of them take their origin : Wręczyce Wielkie nearby Częstochowa.
The most persons with this surname live near this place.

Wreczycki is the spelling on all their documents so I would assume it is the correct spelling. Thank you very much for your help in any case.

I have come up with some more information though. My grandfather Erich married a woman called "Rozalia Jedrzejewski". I know her father Stefan (DOB 08/01/1912) was born and probably married her mother Antonina in the village of Markowicze. That village is very small in south eastern Poland. Do you think it would be possible to access parish records?