Gundulf of Maastricht
Monulf and Gondulf bellringers’ guild, Maastricht
Maastricht; Monulf and Gondulf bellringers’ guild; Monulfus and Gondulfus church, De Heeg; Monulphus and Gondulphus parish, Achel
- Kerkgebouwen in Limburg, Monulfus en Gondulfus, De Heeg — Secondary city patron and documented named guild/churches
- Kerknet, Sint-Monulphus en Gondulphus, Achel — Secondary city patron and documented named guild/churches
- Leon van der Essen, Gondulphus, Catholic Encyclopedia1909 — Secondary city patron and documented named guild/churches
- Sint Servaas basilica, Klokkenluidersgilde — Secondary city patron and documented named guild/churches