He's been alongside the Pope during his liturgical celebrations, both in Rome...and on his trips abroad.
Many will remember him for delivering the final words before the beginning of the last Conclave, which restricted its attendance to the participating Cardinals.
Now, after three five-year terms, he will no longer serve as the Pope's Master of Ceremonies. Pope Francis has assigned him a new role instead, Bishop of Tortona in northern Italy.
Pope Benedict XVI called him to the Vatican in 2007 to coordinate papal liturgies. He was responsible for ensuring that all of the Pope's liturgical celebrations ran smoothly, no matter the odds.
In 2011, he faced a storm that hit during the Pope's vigil at World Youth Day in Madrid.
MSGR. GUIDO MARINI
Master of Pontifical Liturgical Celebrations
'I think those were forty very special minutes, but at the same time they also proved providential. The fact that the pope wanted to stay there despite the rain and the storm caused a lot of sympathy and empathy with the young people present'.
Guido Marini has been the Master of Pontifical Liturgical Celebrations for nearly 14 years, and is considered a leading expert on liturgy. Now he begins a new phase in the Piedmont region of Italy close to his native Genoa.
Javier Romero
TR: JM
VM