Pope Gregory VII was elected pope on April 23, 1073.
The 111th pope was Pope Stephen VI who reigned from 885 until 891.
Pope Gregory XIV died in 1591.
He was elected in 2005 as pope on the 4th ballot of the conclave.
Tthe last Pope that retired was Pope Gregory Xll in 1415.
Pope Gregory V (996-99) Pope Sylvester II (999-1003)
Leo XIII was elected on February 20, 1878.
Pope Leo IX was pope until April 19 of that year when he died. The next pope was not elected until the following year.
Popes are elected for life unless they should resign. Therefore, a pope is not elected every year, only when a pope dies or resigns. The current pope (2013) is Pope Francis. He replaced Pope Benedict XVI who resigned after being pope since April of 2005.
Pope Valentine (Valentinus) was the 100th pope and ruled for one month in the year 827.
He was born about the year 540.
He was elected on March 2, 1939.
He was elected in the year 2005.