Background
Delegate Rosario was born in Baao, Philippines in 1915, and was ordained a priest on March 25, 1939.
Delegate Rosario was born in Baao, Philippines in 1915, and was ordained a priest on March 25, 1939.
At the time of his death, Delegate Rosario was the oldest Filipino bishop as well as one of the oldest Catholic bishops. Delegate Rosario was appointed Coadjutor Bishop of the Diocese of Calbayog and appointed Titular bishop of Zerta on May 24, 1955, and was ordained a bishop on July 25, 1955. He succeeded to bishop of Calbayog July 25, 1958, and was later appointed to bishop of the newly created Diocese of Malolos on December 11, 1961 and installed as ordinary on March 11, 1962.
He also founded the Immaculate Conception Seminary in Tabe, Guiguinto.
In 1963, Delegate Rosario suffered a stroke while attending the Second Vatican Council I in Rome, leaving him paralyzed and using a wheelchair. Delegate Rosario resigned as the bishop of Malolos due to health reasons on December 15, 1977 and was succeeded by Bishop Cirilo Almario.
He died in March 2009 due to pneumonia.