Bishop Abraham Mattam was born on 21st November 1922 at Melampara, in the parish of Narianganam in the eparchy of Palai. After his primary education at Narianganam and Melampara and Middle and High School education at St Mary's High School, Bharananganam, he joined the Vincentian Congregation on 17th January 1941.
After his priestly formation at the Archdiocesan Minor Seminary, Ernakulam and St Joseph's Major Seminary, Alwaye, he was ordained priest on 15th March 1950. He obtained his doctorate in philosophy from the Gregorian University, Rome in 1958. Returning from Rome he held many offices in the congregation such as Rector of Vincentian Minor Seminary, Angamaly, Rector of Vincentian Vidhyabhavan, Alwaye, Superior of Vincentian House, Thodupuzha, General Councillor of the congregation, etc. He was also visiting professor at Mangalapuzha Seminary from 1966 onwards.
He was nominated Apostolic Exarch of Satna on 29th July 1968 and was installed on 09th January 1969. He was appointed Bishop of Satna on 26th February 1977 and was ordained bishop on 30th April 1977. He retired from the office of the Bishop of Satna on 14th January 2000, but continued as administrator of the diocese until 12th April 2000.
After retiring from his offices he was staying at Vincentian Generalate, Edappally. On 16th of April 2019, he was called to eternal abode at the age of 97.