Guy (died 929) was the count

Count

A count or countess is an aristocratic nobleman in European countries. The word count came into English from the French comte, itself from Latin comes—in its accusative comitem—meaning "companion", and later "companion of the emperor, delegate of the emperor". The adjective form of the word is...

 and duke

Duke

A duke or duchess is a member of the nobility, historically of highest rank below the monarch, and historically controlling a duchy...

 of Lucca

Lucca

Lucca is a city and comune in Tuscany, central Italy, situated on the river Serchio in a fertile plainnear the Tyrrhenian Sea. It is the capital city of the Province of Lucca...

 and margrave

Margrave

A margrave or margravine was a medieval hereditary nobleman with military responsibilities in a border province of a kingdom. Border provinces usually had more exposure to military incursions from the outside, compared to interior provinces, and thus a margrave usually had larger and more active...

 of Tuscany from 915, the death of his father Adalbert II

Adalbert II of Tuscany

Adalbert II , called the Rich, son and successor of Adalbert I of Tuscany, and grandson of Boniface II, was much concerned in the troubles of Lombardy, at a time when so many princes were contending for the wrecks of the Carolingian Empire. Before his father died in 884 or 886, he is accredited the...

, to his own death. He was originally under the regency

Regent

A regent, from the Latin regens "one who reigns", is a person selected to act as head of state because the ruler is a minor, not present, or debilitated. Currently there are only two ruling Regencies in the world, sovereign Liechtenstein and the Malaysian constitutive state of Terengganu...

 of his mother Bertha

Bertha, daughter of Lothair II

Bertha was the second illegitimate daughter of Lothair II, King of Lotharingia, by his concubine Waldrada. She was renowned to be beautiful, spirited, and courageous. Ambition, coupled with her influence, involved her husbands in many wars....

, daughter of Lothair II of Lotharingia

Lothair II of Lotharingia

Lothair II was the second son of Emperor Lothair I and Ermengarde of Tours. He was married to Teutberga, daughter of Boso the Elder. He is the namesake of the Lothair Crystal, which he probably commissioned, and of the Cross of Lothair, which was made over a century after his death but...

, until 916.

He kept court at Mantua

Mantua

Mantua is a city and comune in Lombardy, Italy and capital of the province of the same name. Mantua's historic power and influence under the Gonzaga family, made it one of the main artistic, cultural and notably musical hubs of Northern Italy and the country as a whole...

 around the year 920. In 924 or 925, he became the second husband of Marozia

Marozia

Marozia, born Maria and also known as Mariuccia or Mariozza , was a Roman noblewoman who was the alleged mistress of Pope Sergius III and was given the unprecedented titles senatrix and patricia of Rome by Pope John X.Edward Gibbon wrote of her that the "influence of two sister prostitutes,...

, senatrix patricia Romanorum. 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 he was succeeded in Tuscany by his brother Lambert

Lambert of Tuscany

Lambert was the second son of Adalbert II of Tuscany and Bertha, daughter of Lothair II of Lotharingia. He succeeded his elder brother, Guy, as count and duke of Lucca and margrave of Tuscany on his death in 928 or 929 without heirs....

.

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