Grgo Ilić was born in Vareš, Ottoman Empire (central part of modern-day Bosnia and Herzegovina).

razlikî, ravnî, i kratkî, govorenjah za pùk priprostiti bosanski, a u Cvitu razlika mirisa duhovnoga (Mleci 1802); T. Babića svoja Četeri govorenja ćudoredna.

f. Gregorii a Varess, episcopi Ruspensis (Dubrovnik 1797); Epistola pastoralis cum aliis nonnullis litteris circularibus illustris.

domini fratris Gregorii a Varess, episcopi Ruspensis olim coadjutoris et modo vicarii apostolici in Bosna othomana (Padova 1800); Način pribogoljubni za štovati prisveto uznesenje Marijino na nebo (Dubrovnik 1799).

He further printed Nauk krstjanski i druge stvari za znati potrebite (Mleci 1804), while leaving behind in writing a manuscript of Sveta govorenja prieko ciele godine.

An important contribution to Bosnian translation is a collection of speeches of archbishop Alessandro Borgia, with whom Ilić closely associated and printed it in Dubrovnik in 1799 under the title Varhu kraljevstva Marijina, govorenja prisv.

[5] The portrait of Bishop Ilić, oil on canvas, 69 x 89 cm, is kept in Franciscan friary St. Catharine in Kreševo, and on 7 July 2003 is declared a National Monument of Bosnia and Herzegovina as movable property by KONS.