All we know is that Monessa was a convert of St. Patrick and died almost immediately after being baptized about the year 456.
Saint Bernadette of Lourdes was 35 years old when she died.
saint nicholas of myra was about 73 years old when he died.
Saint Lucy was about 21 years old when she was martyred and became a saint.
Helena was about 80 years old when she died.
He was 86 years old when he died.
Saint Lucy of Syracuse was about 21 years old when she was killed.
Saint Dominic de Guzman was 51 years old when he died.
Saint Agnes is believed to have been around 12 or 13 years old when she died as a martyr in the early 4th century.
Rose was only 31 years old when she died.
Thomas Aquinas was about 49 years old when he died.
Saint Benedict was approximately 67 years old when he died in 547 AD. He is known for founding the Benedictine monasteries and establishing the Rule of Saint Benedict, which has had a lasting impact on Western monasticism.
St. Rita Cascia was about 71 years old when she died.