He was the son of the stone carver Pasquale Buhagiar, while his mother was Leonora Buttigieg, originally from Siġġiewi.
[1] Buhagiar had a workshop where the fellow painter Francesco Zahra probably began his training.
For example, The Holy Family with God the Father at the Tarxien parish church was formerly widely attributed to both artists but is now regarded as being Buhagiar's work.
[1] Works attributed to Buhagiar can be found in a number of churches and chapels around the Maltese Islands.
Other works may be found in Saint John's Co-Cathedral in Valletta, the parish churches of Cospicua, Għarb, Għaxaq, Mqabba, Naxxar, Senglea, Siġġiewi, Victoria and Żabbar, in the Inquisitor's Palace in Birgu, and in a number of other churches in Malta and Gozo.