SOURCE-14219Research NeededProbable
Counts of Holland/Dirk van Holland, entry in "Medieval Lands" database (Accessed...
Full citation
Counts of Holland/Dirk van Holland, entry in "Medieval Lands" database (Accessed December 26, 2025). Cawley, Charles. "Medieval Lands": A prosopography of medieval European noble and royal families ©by Charles Cawley, hosted by Foundation for Medieval Genealogy (FMG).