In addition to Homer's posting (and I think he is on the right track!! I also went through all the parishes) I have found a few more siblings - found on http://www.sa.dk/content/dk/ao-forside/find_kirkeboger#http://www.sa.dk/content/dk/ao-forside/find_kirkeboger#, Ulkebøl parish, Als Sonder district, Sonderborg county (1846-1865):
Jørgen Christian Jorgensen is on "opslag" No. 24 (born 26 Apr 1851), and Anne Marie Jorgensen is on "opslag" No. 135 (born 23 Apr 1853).
Marie Cathrine Jorgensen born 17 Aug 1856, "opslag" No. 149
Anne Kirstine Jorgensen born 9 Feb 1860, "opslag" No. 167 (not mentioned in Nate's posting)
Anne Sophie Jorgensen born 18 Dec 1864, "opslag" No. 187
Cannot find Claus Jorgensen.
Parents: Jorgen Christian Jorgensen and Anna Sophie born Zimmermann in Ulkebol.
The couple married in Ulkebol parish (same book) on 27 Oct. 1850, "opslag" No. 258. He was 31 yrs old and from Ulkebol, and she was 24 yrs old and from Dyppel (?)
Hope we have found the right people?
I have talked to a local archive on Funen, where the sister Anne Marie was married to Jens Madsen and wait for a reply, whether they have anything about these people.