He is married to Maria Josephina Geerts.
They got married on September 23, 1871 at Mol, Antwerpen, België, he was 23 years old.Source 2
"Belgique, Anvers, registres d'état civil, 1588-1913," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:8432-V5T2 : 12 August 2020), Petrus Joannes van Gompel, 23 Sep 1871; citing Marriage, Mol, Antwerpen, België, België Staatsarchief (State Archives of Belgium), Brussels; FHL microfilm .
https://familysearch.org/ark:/61903/1:1:8432-V5T2
https://familysearch.org/ark:/61903/4:1:LYMG-MMY