Having been appointed chaplain to the Duke of Ormonde, Lord-Lieutenant of Ireland, he became in 1681 precentor of Christ Church Cathedral, Dublin;[6] in 1683 Archdeacon of Leighlin;[7] and 28 February 1690–1 Dean of Armagh,[8] retaining his archdeaconry, and holding at the same time the rectory of Armagh. He was buried in the Armagh Cathedral, where a fine monument by Rysbrack was erected by his widow to his memory.[9] On a mural tablet, in Latin, is a minute account of his origin and promotions, and on the front of the sarcophagus an inscription in English verse.[10] It alludes to the erection in Armagh of the "Drelincourt Charity School" by the dean's widow, Mary. To their daughter, Viscountess Primrose, the citizens of Armagh are chiefly indebted for a plentiful supply of water.
Drelincourt's only publication is A Speech made to … the Duke of Ormonde, Lord-Lieutenant of Ireland, and to the … Privy Council. To return the humble thanks of the French Protestants lately arriv'd in this kingdom; and graciously reliev'd by them, 4to, Dublin, 1682.
^Mulligan, Kevin V. (2013). The Buildings of Ireland: South Ulster. Yale University Press. p. 105. ISBN978-0-300-18601-7.
^"Alumni Dublinenses : a register of the students, graduates, professors and provosts of Trinity College in the University of Dublin (1593–1860)" Burtchaell, George Dames/Sadleir, Thomas Ulick (Eds) p244: Dublin, Alex Thom and Co, 1935
^"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 2" Cotton, H. p53 Dublin, Hodges & Smith, 1848–1878
^"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 2" Cotton, H. p398 Dublin, Hodges & Smith, 1848–1878
^Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1986). Handbook of British Chronology (3rd ed.). Cambridge: Cambridge University Press. pp. 400–401. ISBN0-521-56350-X.
^"Funary Monuments & Memorials in St Patrick's Cathedral, Armagh" Curl, J.S. pp31-42: Whitstable; Historical Publications; 2013 ISBN978-1-905286-48-5