John III of Brittany, Duke of Brittany

• Name	John III of Brittany  [1]
  Suffix	Duke of Brittany
  Gender	Male
  Person ID	I14506	Savoia Genealogy
  Last Modified	17 Apr 2025

  
  

  Father	King of Thessalonica Guglielmo del Monferrato, 12th Marquis of Monferrato,   b. Abt. 1240, Trino, Vercelli, Piemonte, Italy d. 6 Feb 1292, Alessándria, Alessandria, Piemonte, Italy (Age ~ 52 years)
  Mother	Beatrice di Castiglia
  Family ID	F5359	Group Sheet  |  Family Chart

  
  

  Family	Giovanna di Savoia
  Children	1. Adalberto di Spoleto   2. Simona della Volta
  Family ID	F5348	Group Sheet  |  Family Chart
  Last Modified	26 Apr 2025

  
  

• Sources

  [S5082] "Boso II of Arles," Wikipedia, last modified 29 Mar 2025, https://en.wikipedia.org/wiki/Boso_II_of_Arles.