Guy (also ''Guido'' or ''Wido''; raised Leo; called the Philosopher) (died 3 February 929) was the son of

Adalbert II of Tuscany Adalbert II (c. 875 – 915), called the Rich, son of Adalbert I, Margrave of Tuscany and Rothild of Spoleto. He was a grandson of Boniface II of Tuscany, Boniface II, and was concerned with the troubles of Lombardy, at a time when so many prince ...

with

Bertha Bertha is a female Germanic name, from Old High German ''berhta'' meaning "bright one". It was usually a short form of Anglo Saxon names ''Beorhtgifu'' meaning "bright gift" or ''Beorhtwynn'' meaning "bright joy". The name occurs as a theonym, s ...

, daughter of

Lothair II of Lotharingia Lothair II (835 – 8 August 869) was the king of Lotharingia from 855 until his death. He was the second son of Emperor Lothair I and Ermengarde of Tours. He was married to Teutberga (died 875), daughter of Boso the Elder. Reign For political ...

. After the death of his father Adalbert II in 915, he was the

Count Count (feminine: countess) is a historical title of nobility in certain European countries, varying in relative status, generally of middling rank in the hierarchy of nobility. Pine, L. G. ''Titles: How the King Became His Majesty''. New York: ...

and

Duke Duke is a male title either of a monarch ruling over a duchy, or of a member of royalty, or nobility. As rulers, dukes are ranked below emperors, kings, grand princes, grand dukes, and sovereign princes. As royalty or nobility, they are ran ...

Lucca Lucca ( , ) is a city and ''comune'' in Tuscany, Central Italy, on the Serchio River, in a fertile plain near the Ligurian Sea. The city has a population of about 89,000, while its province has a population of 383,957. Lucca is known as one o ...

and

Margrave Margrave was originally the medieval title for the military commander assigned to maintain the defence of one of the border provinces of the Holy Roman Empire or of a kingdom. That position became hereditary in certain feudal families in the Emp ...

of Tuscany until his own death in 928 or 929. His mother Bertha was his

regent A regent (from Latin : ruling, governing) is a person appointed to govern a state '' pro tempore'' (Latin: 'for the time being') because the monarch is a minor, absent, incapacitated or unable to discharge the powers and duties of the monarchy ...

from his father's death until 916. He kept court at

Mantua Mantua ( ; it, Mantova ; Lombard language, Lombard and la, Mantua) is a city and ''comune'' in Lombardy, Italy, and capital of the Province of Mantua, province of the same name. In 2016, Mantua was designated as the Italian Capital of Culture ...

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

Marozia Marozia, born Maria and also known as Mariuccia or Mariozza ( 890 – 937), was a Roman noblewoman who was the alleged mistress of Pope Sergius III and was given the unprecedented titles ''senatrix'' ("senatoress") and ''patricia'' of Rome by ...

, a Roman noblewoman who had the title ''senatrix patricia Romanorum''. In order to counter the influence of

Pope John X Pope John X ( la, Ioannes X; died 28 May 928) was the bishop of Rome and nominal ruler of the Papal States from March 914 to his death. A candidate of the counts of Tusculum, he attempted to unify Italy under the leadership of Berengar of Friuli, ...

(whom the hostile chronicler Liutprand of Cremona alleges was one of Marozia's lovers), Marozia subsequently married his opponent

Guy of Tuscany Guy (also ''Guido'' or ''Wido''; raised Leo; called the Philosopher) (died 3 February 929) was the son of Adalbert II of Tuscany with Bertha, daughter of Lothair II of Lotharingia. After the death of his father Adalbert II in 915, he was the Cou ...

, who loved his beautiful wife as much as he loved power. Together they attacked Rome, arrested Pope John X in the

Lateran 250px, Basilica and Palace - side view Lateran and Laterano are the shared names of several buildings in Rome. The properties were once owned by the Lateranus family of the Roman Empire. The Laterani lost their properties to Emperor Constantine ...

, and jailed him in the

Castel Sant'Angelo The Mausoleum of Hadrian, usually known as Castel Sant'Angelo (; English: ''Castle of the Holy Angel''), is a towering cylindrical building in Parco Adriano, Rome, Italy. It was initially commissioned by the Roman Emperor Hadrian as a mausol ...

. 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 A coup d'état (; French for 'stroke of state'), also known as a coup or overthrow, is a seizure and removal of a government and its powers. Typically, it is an illegal seizure of power by a political faction, politician, cult, rebel group, m ...

''. Guy died 3 February 929. The following popes,

Leo VI Leo VI (or Leon VI, notably in Greek) may refer to : * Leo VI the Wise, Byzantine emperor 886 to 912 * Pope Leo VI, 928 to 929 * King Leo VI of Armenia (1342 – 1393), of the House of Lusignan, last Latin king of the Armenian crusader Kingdom of C ...

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. 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 Lambert succeeded him as count and duke of Lucca and margrave of Tuscany. Meaning that either this page is incorrect or the page listing "his son" Adalberto the Margrave (died 951, was elevated to the nobiliary title of "Visconte" in 940) is incorrect.

Adalberto the Margrave Adalberto the Margrave, also known as "il Margravio" or "Adalberto III" (10th century – 951?) was an Italian nobleman tied with the Obertenghi family and a well-known ancestor to the Este, Pallavicini and Malaspina family. Biography and family ...

References

{{s-end 929 deaths Margraves of Tuscany Counts of Lucca Nobility from the Republic of Lucca Year of birth unknown House of Boniface Dukes of Italy