Born on the 11th of November 1928 in Victoria Gozo. He began his studies at the Seminary in Rabat, Gozo, afterwards he continued his studies at the Gregorian University and at the Lateran University in Rome. After years of study he graduated in Theology and Canon Law. After his ordination, on the 8th pf March 1952, he was appointed Councillor at the Gozitian Curia. Fr Joseph Mercieca started teaching Theology and Canon Law at the Seminary in Gozo. From 1959 to 1969, he was appointed Rector. The year 1969 saw Fr Mercieca as Judge in the Sacra Romana Rota, Consultant for both Congregation of Sacraments and Congregation of the Doctrine or the Faith. Five years later on the 27 of July 1974, Pope Paul the 6th nominated him Auxiliary Bishop for Mons Michael Gonzi. On the 29th of September he was consecrated Titular Bishop of Gemallae in Numidja. The 12th of December 1976 was the day when the Archdiocese of Malta had a new Archbishop: Mons Joseph Mercieca. On the 11th of June 1991 Mons Mercieca was nominated member of the Supreme Tribunal of the Appostolic Signatura. From 1974 till 2006 Mons Joseph Mercieca lead the Church in both difficult and joyous of times. During his time as archbishop, 343 priests were ordained, between secular and religious. On the 26th of January 2007, Mons Mercieca was principal consecrator at the episcopal ordination of Mons Paul Cremona O.P, who succeeded him as Archbishop of Malta. Among the honours received by Mons Mercieca two stand out, that of Member of “Xirka Gieh ir-Repubblika”, and “Gieh Ghawdex”, given to him in 1995 and 2010 respectively. On the 21st of March 2016, surrounded by his family together with Archbishop Scicluna and Archbishop Grech, the beloved Archbishop Emeritus died aged 87.