Guglielmo del Monferrato, 12th Marquis of Monferrato

1240 - 1292  (~ 52 years)

• Name	Guglielmo del Monferrato  [1, 2]
  Suffix	12th Marquis of Monferrato
  Birth	Abt. 1240	Trino, Vercelli, Piemonte, Italy   [2]
  Gender	Male
  Also Known As	il Gran Marchese  [2]
  Also Known As	The Great Marquis  [2]
  Also Known As	William VII of Montferrat  [1]
  Title	King of Thessalonica  [2]
  Title	12 May 1253-6 Feb 1292  [2]
  	12th Marquis of Monferrato
  Death	6 Feb 1292	Alessándria, Alessandria, Piemonte, Italy   [2]
  Burial	Lucedio Abbey, Vercelli, Piemonte, Italy   [2]
  Person ID	I169	Savoia Genealogy
  Last Modified	17 Apr 2025

  
  

  Father	Bonifacio II del Monferrato, 11th Marquis of Monferrato,   b. Jul 1202   d. 12 May 1253, Moncalvo, Asti, Piemonte, Italy (Age ~ 50 years)
  Mother	Margherita di Savoia
  Family ID	F71	Group Sheet  |  Family Chart

  
  

  Family 1	Isabella de Clare,   b. Abt. 1240   d. Bef. 1271 (Age ~ 30 years)
  Marriage	1258  [2]
  Children	1. daughter del Monferrato   2. Margherita del Monferrato
  Family ID	F99	Group Sheet  |  Family Chart
  Last Modified	17 Apr 2025

  
  

  Family 2	Beatrice di Castiglia
  Children	1. son del Monferrato,   b. 1272   d. 1273 (Age 1 year)   2. son del Monferrato,   b. 1272   d. 1273 (Age 1 year) + 3. Irene del Monferrato,   b. Abt. 1274   d. 1317 (Age ~ 43 years)   4. Giovanni I del Monferrato, 13th Marquis of Monferrato,   b. Abt. 1275   d. 1305 (Age ~ 30 years)   5. Alessina del Monferrato   d. Bef. 1305
  Family ID	F70	Group Sheet  |  Family Chart
  Last Modified	17 Apr 2025

  
  

• Photos

  Guglielmo del Monferrato, 12th Marquis of Monferrato

  
  

• Sources

  [S48] "Boniface II, Marquis of Montferrat," Wikipedia, last modified 9 Dec 2023, https://en.wikipedia.org/wiki/Boniface_II,_Marquis_of_Montferrat. [S49] "William VII, Marquis of Montferrat," Wikipedia, last modified 7 Mar 2025, https://en.wikipedia.org/wiki/William_VII,_Marquis_of_Montferrat.