Christopher Bonjean, OMI (1868-1883)
Due to his agitation, the Jaffna Boys’ Catholic School was able to obtain the government grant that was being given to denominational English Schools. In 1881 he named the school St. Patrick’s College. He contributed a lot to the growth of the College. Being a stern person, Bishop Bonjean was the champion of the Catholic cause in Ceylon. His powerful influence in Catholic Education is seen by the fact that government gradually yielding several concession to Catholic schools.

Thomas A. Melisan, OMI (1883-1893)
He constructed several buildings for the College. He gave 87 acres of land for the extension of the College. He gave several additional grants for construction purposes. He donated a band set to the College. He made remarkable contributions towards the upliftment of the College.

Henry Joulain, OMI (1893-1918)
His episcopacy was marked by a great expansion of Catholicism in Jaffna. St. Patrick’s College was of paramount concern for him. Under his guidance the College progressed by leaps and bounds. Educational standards rose very high and the number of students increased rapidly. The boarding houses were expanded. The College became one of the foremost institutions in the North.

Jules A. Brault, OMI (1919-1923)
He made notable contributions in the cause of education. He submitted several amendments to the then education bill and obtained greater aid from the government. He sent Rev. Fr. Timothy F. Long of the staff to Cambridge to graduate in English Literature.

John A. Guyomar, OMI (1924-1950)
Prior to becoming a bishop, he was the Rector of the College for four years. As a young priest Rev.Fr.Mathews brought him to the College in 1910. He was a Cambridge graduate regarded as one of the most learned men in Ceylon. Even when he was bishop, St. Patrick’s remained the apple of his eye. He helped St. Patrick’s to make historical achievements in the sphere of education and sports.

J. Emilianuspillai, OMI (1950-1972)
He was the first son of the soil to become the 8th Bishop of Jaffna. He was the first old boy of the College to be elevated to the episcopacy. He was primarily concerned about education of the Catholic youth in Jaffna especially the poor. He took bold steps to retain Catholic schools after the school take-over in 1960. St. Patrick’s was his prime concern. Amidst enormous difficulties and obstacles he nurtured and fostered the College with unfailing and unabated care and concern.

Bastiampillai Deogupillai (1973-1992)
His long experience in the field of education enabled him to have the right vision as the Bishop with regard to promoting education in Jaffna. His 20 years of episcopate was characterized by political turmoil, disappearances, human right violations and mass killings in the North East of the country. In the midst of these harrowing experiences he stood erect, fearless and outspoken. The prize day address delivered by him on 18th June 1986 is a prophecy that still prevails. As fearless champion of justice he remains a model for all Patricians to stand for justice and speak for the oppressed. He was a tower of strength to the Patrician family in times of despair and destruction.

Thomas Savundaranayagam (1992-todate)
His fatherly love and ever abiding interest in the welfare of the College are quite noteworthy. During the two decades of war, St. Patrick’s has been the worst hit private school in the north. At this time of reconstruction and rehabilitation, he does his utmost to rebuild and refurbish the school from its severe destruction. When the College is in dire need of several facilities, the bishop continues to support the school to obtain its needs.