Geevarghese Mor Coorilos, formerly George Mathew Nalunnakkal, is the Metropolitan of Niranam Diocese of Malankara Jacobite Syriac Orthodox Church.
 George Mathew Nalunnakkal was born in Nalunnakkal, Kottayam, Kerala in 1965 as son of P.C. Mathew (Principal Sub Registrar) and Marykutty  . He has two brothers and four sisters. He was baptized at St. Adai's Jacobite Syriac Orthodox Church, Nalunnakkal, his home parish. His early schooling was done at St. Adai's Primary School, St. Elias Upper Primary School, Nalunnakkal and Jerusalem Mount High School, Vakathanam. After his schooling he joined St. Berchmans' College, Changanacherry where he did his Pre-Degree and Graduation in English literature.
 After his graduation, he joined the United Theological College, Bangalore for his theological studies. He completed his B.D in 1990 in first class and was appointed as research assistant in the department of Church and Society. In 1991, he joined the faculty of the M.S.O.T.Seminary in Mulanthuruthy, Kerala. In 1992 he was offered a scholarship to do his doctoral studies in England and he joined the University of Kent at Canterbury, England to do his Ph.D. in Ecotheology under Anglican Professor Robin Gill. On completing his Ph.D., he rejoined M.S.O.T.Seminary and resumed teaching. In 2001 Mor Coorilos joined the teaching faculty of the United Theological College, Bangalore.
 Mor Coorilos was ordained a deacon in 2001 and a priest in 2002 by Thomas Mor Themotheose Metropolitan. After his ordination, he served as vicar in different parishes in Kerala and assistant vicar in one of the Bangalore parishes. In 2006, he was elevated to the position of Bishop
 He presently serves as the president of KCC (Kerala Council of Churches), He served the Kerala Council of Churches as its senior faculty member (1997–1998), the National Council of Churches in India as its executive secretary for Mission and Evangelism (1998–2001).  He now serves the World Council of Churches as  moderator of its Commission on World Mission and Evangelism (CWME). He was also a full member of the WCC's reference group on Human Sexuality. Mor Coorilos also serves as a member of the Working Group of Global Christian Forum (GCF) that looks at the issue of proselytism and mission and also as the chairperson of the Student Christian Movement of India ( SCMI). He is also a member of the advisory group of Korean Institute of Future Ecumenism (KIFE). He also serves as a member of the Theological Commission of the Malankara Jacobite Syriac Orthodox Church that is engaged in bilateral dialogue with the Mar Thoma Syrian Church.
 As of 2014 Mor Coorilos was the chairman of Theeram, India Center for Social Change, a charitable trust that Mor Coorilos founded in 2002 which has been working for the welfare of mentally challenged children in Kerala . Under his leadership this institution has established thirteen vocational training and day care centers in various parts of Kerala and a full-fledged residential centre in Puthuppally,  Kottayam under the name "Theeram" {www.icsctheeram.org}, where about 225 mentally disabled boys and girls are being trained. Theeram has also started an old age home in the tsunami-hit area of Alappadu in Karunagappally, Kerala.
 As of 2014  Metropolitan Coorilos was serving Mor Adai Study Center as its working president. He was the co-founder and the executive director since 2003 and when he was elevated to the position of metropolitan, he became the working president.
 Coorilos's published works include: