Fehlende Vorfahren von Gregorio I Boncompagni-Ludovisi * di Piombino * di Sora e d'Arce * di Vignola * d'Aquino in Bezug auf:
Generation 5: 1
Generation 7: 2
Generation 6: 3
Generation 6: 4
Generation 6: 5
Generation 4: 6
Generation 3: 7
Generation 7: 8
Generation 5: 9
Generation 5: 10
Generation 7: 11
Generation 5: 12
Generation 4: 13