Pope Pius I

Pope Pius I (; died 154) was an Italian priest of the Roman Catholic Church and the 10th Pope, the official title is the Bishop of Rome from 140 until his death in 154.
Early life.
Pius was born at Aquileia, in Northern Italy.
Pope.
Pius became pope in 140. 
He was the first sole Bishop of Rome during his reign. Previously, the Bishop of Rome was a council of Bishops with the Pope being the head of the council. His feast day is celebrated on July 11.