Descendants (male lines only): Petrus Martinus Derks
Generation 1
1 Petrus Martinus Derks, * 1898 Wanroij, , Noord-Brabant, Nederland, † 1980 Mill, , Noord-Brabant, Nederland, ∞ 1927 Oploo, , Noord-Brabant, Nederland Maria Graat, * 1901 Oploo, , Noord-Brabant, Nederland.