LESS KNOWN FROM PAPAL HISTORY

St Peter was assumed as pope in AD 30. Remained in the papal reign upto AD 64/68. The successor: Bishop of Rome (according to tradition) Linus. Bishop of Antioch (according to tradition) Evodius. As per the Annuaro Pontifico, the Papel Annual, there have been 260 Pope's since St Peter. (This number is not confirmed on all accounts)

Pope Pius IX (1792- 1878) was the Pope of Catholic Church from 1846 to 1878, the longest in the papal reign.

The Popes who were on the shortest period in the papal reign were:

Pope Stephen II from March 24 to 26 in AD 742

Pope Leo IX from April 1 to 12 in April 1605

Pope Urban VII from 15 to 27 September 1590.

Shortest reigning Pope in 20th century was Pope John Paul I. He became Pope on 26th August 1978 but remained in the reign only until his death 33 days later. 

Pope Benedict IX (1012-1056) was the Bishop of Rome and the ruler of the Papal State. On three occasions between October 1032 and July 1048, aged approximately 20 years when he became Pope on the first time and two more occassion he became Pope at young age. Thus he was the only one who became Pope in three occasions.

According to legend Pope Joan was the only female Pope of the Catholic Church. She remained in the reign from AD 855 to 857. Her story first appeared in chronicles in the 13th century and subsequently spread throughout Europe. The story was widely believed for long but modern scholars regard this as fictional.

Popes who were legally married: Pope John XVII of AD 1003 was legally married before becoming Pope and had three sons. All his three sons became priests. Pope Pius II (1458-1464) was reportedly not married but had two children. Pope Adrian II (867 - 872) was married and had a daughter. Clement IV (1265-1268) was married and had two daughters. Pope  Honorius IV (1285-1287) was married and had two sons.

There were few more Pope's who were married and had children.

(Indebted to a number of web sources including Wikipedia.)

K V George