Theodora was a senatrix

Roman Senate

The Senate of the Roman Republic was a political institution in the ancient Roman Republic, however, it was not an elected body, but one whose members were appointed by the consuls, and later by the censors. After a magistrate served his term in office, it usually was followed with automatic...

 and serenissima vestaratrix of Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

, mother 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,...

, alleged concubine to Pope Sergius III

Pope Sergius III

Pope Sergius III was a pope of the Roman Catholic Church from 29 January 904 to 14 April 911. Because Sergius III was possibly the only pope known to have ordered the murder of another pope and the only pope to have fathered an illegitimate son who later became pope , his reign has been described...

.

Theodora was a grandmother of Pope John XI

Pope John XI

Pope John XI was a Pope from March 931 to December 935.-Parentage:The parentage of John XI is still a matter of dispute. According to Liutprand of Cremona and the "Liber Pontificalis," he was the natural son of Pope Sergius III , Pope John XI (910? – December 935) was a Pope from March 931 (at...

, a son of Marozia and—according to Liutprand of Cremona

Liutprand of Cremona

Liutprand, also Liudprand, Liuprand, Lioutio, Liucius, Liuzo, and Lioutsios was a Lombard historian and author, and Bishop of Cremona....

 and the Liber Pontificalis

Liber Pontificalis

The Liber Pontificalis is a book of biographies of popes from Saint Peter until the 15th century. The original publication of the Liber Pontificalis stopped with Pope Adrian II or Pope Stephen V , but it was later supplemented in a different style until Pope Eugene IV and then Pope Pius II...

—Pope Sergius III

Pope Sergius III

Pope Sergius III was a pope of the Roman Catholic Church from 29 January 904 to 14 April 911. Because Sergius III was possibly the only pope known to have ordered the murder of another pope and the only pope to have fathered an illegitimate son who later became pope , his reign has been described...

. A third contemporary source, however—the annalist Flodoard

Flodoard

-Biography:He was born at Épernay, and educated at Reims in the cathedral school which had been established by Archbishop Fulcon .As canon of Reims, and favourite of the archbishops Herivaeus and Seulfus -Biography:He was born at Épernay, and educated at Reims in the cathedral school which had...

 (c. 894-966)—says John XI was brother of Count Alberic II of Spoleto

Alberic II of Spoleto

Alberic II was ruler of Rome from 932 to 954, after deposing his mother Marozia and his stepfather, King Hugh of Italy.He was of the house of the Counts of Tusculum, the son of the notorious Marozia by her first husband, Alberic I, Duke of Spoleto. His half-brother was Pope John XI...

, the latter being the offspring of Marozia and her husband Count Alberic I of Spoleto

Alberic I of Spoleto

Alberic I was the Lombard duke of Spoleto from between 896 and 900 until 920, 922, or thereabouts. He first appears as a page to Guy III of Spoleto at the Battle on the Trebbia in 889 He may have later been the count of Fermo or margrave of Camerino, but whatever the case, he succeeded to Spoleto...

. Hence John too was probably the son of Marozia and Alberic I.

Theodora was characterized by the aforementioned Liutprand as a "shameless whore ... [who] exercised power on the Roman citizenry like a man." This bishop of Cremona was described by the Catholic Encyclopedia

Catholic Encyclopedia

The Catholic Encyclopedia, also referred to as the Old Catholic Encyclopedia and the Original Catholic Encyclopedia, is an English-language encyclopedia published in the United States. The first volume appeared in March 1907 and the last three volumes appeared in 1912, followed by a master index...

as frequently being unfair to his adversaries and could be partial in his judgments.