In the 13th century, it took almost three years — 1,006 days to be exact — to choose Pope Clement IV's successor, making it the longest conclave in the Catholic Church’s history.

In the 13th century, it took almost three years — 1,006 days to be exact — to choose Pope Clement IV’s successor, making it… The conclave to elect Pope Gregory was the longest conclave in ...

The election of a successor to Pope Clement IV in 1268 dragged on for so long — about 1,000 days — that locals in the town of Viterbo, ... Pope Gregory X was finally elected in September of 1271.

The election of a successor to Pope Clement IV in 1268 dragged on for so long — about 1,000 days — that locals in the town of Viterbo, ... Pope Gregory X was finally elected in September of 1271.

The election of Pope Gregory X in 1271 took two years and nine months. The cardinals had gathered in the city of Viterbo, about 50 miles north of Rome, where Pope Clement IV died in 1268.

After Pope Clement IV died in November 1268, cardinals met in Viterbo, Italy, ... The Guelphs' side prevailed as the cardinals finally elected Pope Gregory X on Sept. 1, 1271.

In the 13th century, it took almost three years — 1,006 days to be exact — to choose Pope Clement IV's successor, making it the longest conclave in the Catholic Church’s history.