Neelankavil was born on 23 July 1967, at Valapad, as the eldest son among the five children of Chevalier Prof. N.A Ouseph and T.J Mary in the Archeparchy of Trichur.

After having completed his Pre-Degree Course at St. Thomas College, Thrissur, he joined St. Mary's Minor Seminary, Trichur in 1984.

He launched the International Symposium Series called MEPC (Marymatha Encounters of Pastoral Challenges).

He also served as chaplain of Jesus Fraternity (Prison ministry) at Special Sub-Jail, Trichur.

He has participated in the Third International Conference on Catechesis from 8 to 10 September 2022, organized by the Pontifical Council for Promoting New Evangelization in Paul VI Hall, Vatican.