Jose de Jesus Sahagun de la Parra, Bishop of Ciudad Lazaro Cardenas in Mexico until 1993, is one of the last four living fathers of the Second Vatican Council (1962-1965) - and the only one to have taken part in its opening.
Sahagun de la Parra has been a priest for 78 years and a bishop for 63 years.
Since July 2022, he has been the oldest bishop in the world.
Nine bishops are currently over 100 years old, more than ever before.