Coombs Genealogies


Discovering our American and European Ancestors

First Name Last Name
Guido, Margrave of Tuscany

Guido, Margrave of Tuscany

Male 880 - 929  (49 years)


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  • Name Guido  
    Suffix Margrave of Tuscany 
    Nickname The Philosopher 
    Birth 880  Lucca, Italy Find all individuals with events at this location 
    Gender Male 
    Death 3 Feb 929 
    Person ID I26334  Coombs
    Last Modified 13 Dec 2014 

    Father Adalbert II 'le riche' d' IVREA, de Lucca ; Marquis of Tuscany,   b. 855, Tuscany, Italy Find all individuals with events at this locationd. 22 Aug 915 (Age 60 years) 
    Mother Bertha,   b. Abt 867, Lorraine, Alsace, France Find all individuals with events at this locationd. 8 Mar 925, Lucca, Toscana, Italia Find all individuals with events at this location (Age 58 years) 
    Marriage Abt 898 

    • ABT
      2ème épouse d'Adalbert.
    Family ID F9673  Group Sheet  |  Family Chart

    Family Marozia Mariuccia, Roman Senatrix,   b. Abt 895, of, Rome, Italy Find all individuals with events at this locationd. Abt 937 (Age 42 years) 
    Marriage 924  of, Lucca, Italy Find all individuals with events at this location 
    Children 
     1. Adalbert III, Margrave of Tuscany,   b. Abt 895, Lucca, Tuscany, Italy Find all individuals with events at this locationd. 915 (Age 20 years)
    Family ID F9180  Group Sheet  |  Family Chart
    Last Modified 2 Feb 2026 

  • Notes 
    • After the death of his father Adalbert II in 815, he was the Count and Duke of Lucca and Margrave of Tuscany until his own death in 928 or 929. His mother Bertha was his regent from his father's death until 916.
      He kept court at Mantua around the year 920. In 924 or 925, he became the second husband of Marozia, a Roman noblewoman who had the title senatrix patricia Romanorum.
      In order to counter the influence of Pope John X (whom the hostile chronicler Liutprand of Cremona alleges was one of Marozia lovers), Marozia subsequently married his opponent Guy of Tuscany, who loved his beautiful wife as much as he loved power. Together they attacked Rome, arrested Pope John X in the Lateran, and jailed him in the Castel Sant'Angelo. Either Guy had him smothered with a pillow in 928 or he simply died, perhaps from neglect or ill treatment. Marozia seized power in Rome in a coup d'état. Guy died 3 February 929.
      The following popes, Leo VI and Stephen VII, were both her puppets. In 931 she even managed to impose her son as Pontiff, under the name of John XI. John was only twenty-one at the time.[2]
      He had one daughter, Theodora (or Bertha), and probably a few other children of which nothing else is known. None of his children survived him and when he died in 928 or 929 his brother Lambertsucceeded him as count and duke of Lucca and margrave of Tuscany.