Rev. Fr. Mammen Mathew was born on March 24, 1943 to Mr. Thomas Mammen and Aleyamma Pulikathara. After his High School in Ayroor he joined the Catholicate College and graduated in Physics and Mathematics in 1966. He then continued his studies for master's degree in English from the Govt. College in Ajmir, Rajasthan in 1969. He finished the teaching degree (B. Ed) in 1971, from Mumbai University. He worked with the Catholic Student Union in Ajmir, Rajasthan and at night he enjoyed teaching High School dropouts in Mumbai.
In 1973 he married Annamma from Naranganam and they moved to New York in 1974. There he studied and certified in Nuclear Medicine from New York. In 1976 he relocated to Houston and worked his way up to be the Director of the Nuclear Medicine Department of the BenTaub Hospital and retired from the service in 1996.