Here are some of Ivan Christen Petersen's and your ancestors. All the records are from Ringkøbing.
Ivan's parents, Simon Petersen and Sidsel Pedersen were married in Herning, Hammerum on 17 Jun 1904.
Simon Pedersen was born in Haderup, Ginding on 28 Apr 1877 to Simon Pedersen and Ellen Kirstine Nielsen.
Sidsel Pedersen was born in Herning, Hammerum on 12 Feb 1878 to Iver Pedersen and Karen Andersen.
Iver Pedersen and Karen Andersen were married in Sunds, Hammerum on 2 Nov 1877.
Iver Pedersen was born in Gjellerup, Hammerum on 12 Aug 1852 to Peder Nielsen and Sidsel Pallesdatter.
Karen Andersen was born in Sunds, Hammerum on 24 Apr 1854 to Anders Andersen and Ane bargrethe Wistisdatter.
I have more information that I have found but I need to verify it in the Danish church records.
With kind regards,
North Carolina, USA