He executed people convicted under religion.
Giovanni Battista Bugatti (1779–1869) was the official executioner for the Papal States from 1796 to 1864. He was the longest-serving executioner in the States and was nicknamed Mastro Titta, a Roman corruption of maestro di giustizia, or master of justice. At the age of 85, he was retired by Pope Pius IX with a monthly pension of 30 scudi. [en.m.wikipedia.org]
masochists come in many forms and from many belief systems
He either lived a very long life by the standards of the 18th/19th century, or he started killing people at a very young age.
514 executions ÷ 68 years = 7.56 executions/year
And these were just the beheadings.
Then there were the people who were burned at the stake, drowned, starved to death, killed in religious wars...
Lot of blood on church hands
Yes, a very long life for his time. I looked up in Wikipedia.... [en.m.wikipedia.org]