Born on 2nd October, 1924 at Pathamuttom, a village in Kottayam District of Kerala State, India of the parents Kurien Mariam of Kayyalath family, he was called Punnoose. School Education started at the local village school was completed from the nearby English Medium School. B.A. and M.A. History were obtained from D.N. Jain College and Mahakoshal Mahavidhyalaya, Jabulpur. Theological education started at Leonard Theological College, Jabalpur was completed in U.S.A., acquiring B.D. from General Theological Seminary, New York and S.T.M. from Berkley Divinity School, New Haven. Educational career was crowned with Ph.D. (Honoris Causa) from the General Theological Seminary.
The influence of his spiritual mentor V.Rev.M.C. Kuriakose Ramban resulted in the ordination of Punnoose as a celebate priest at the age of 23 in 1947 from the illustrious Catholicose Baselious Geevarghese II. The important churches served by him as vicar are St. George, Jabalpur, St. Marys Dadar and Churches in Baharin, Doha, Abudabi, Dubai and finally Bhilai. The real turning point in his life was in 1952 on completion of 25 years of parish work when he voluntarily assumed the responsibility of full time missionary work as the Director of St. Thomas Mission, Bhilai.
Fr. Punnoose was elevated to the exalted position of a Bishop in 1975 as Stephanos Mar Theodosius and given the charge of of Madras Diocense in 1979 and his untiring efforts led Calcutta Diocese from glory through out his stewardship. He was called to eternal rest on 5th Nov. 07 at Muscat while visiting his flock. Mar Theodosius was a man of varied interests. H.G. will be remembered for his excellent educational institutions including an Engg. College, an Arts and Science College, a B.Ed. College, 26 Schools, most of them at the Secondary and Higher Sec. levels apart from a large number of Balavadis in villages.
Mar Theodosius had a wholistic concept of Mission. He saw mission as the development of the whole man or village, the physical, the spiritual, the economic and the social developments. The village mission activities started and developed by H.G. are now copied by many. Mar Theodosius was a visionary Bishop. His call had been for selfless service for the sake of the poor, illiterate and marginalised millions of India. It fell on many deaf ears in his life time. The joy of this soul will know no bounds if some children of the Orthodox Church decide to walk in his footprints.