Maelbrighte Ó Hussey (non-anglicised Maol Brighde Ó hEodhusa, in Latin, Brigidus Hossæus), known also as Bonaventura Hussey, Bonaventura Ó hEoghusa and Giolla Brighde Ó hEoghusa, was a Franciscan Friar, teacher, Gaelic-Irish poet and Catholic author, fl. 1608–1614.
Ó hEodhusa was born in the Diocese of Clogher, in Ulster. Some details of Giolla Brighde survive. He was a member of the Ó hEoghusa family of Ulster. He arrived at Louvain in 1606 and was ordained there in 1608, where he took the name Bonaventura. He was associated with Flaithri Ó Maolconaire. The first definite information about him dates from 1 November 1607, on which day he became one of the original members of the Irish Franciscans at their college of St. Anthony at the University of Leuven in Flanders. It seems, however, that he had previously been at Douai in northern France. At Louvain, he lectured first in philosophy and afterwards in theology.
Ó hEodhusa's fame rests upon his profound knowledge of the history and language of Ireland, for which, according to the chronicles of his order, he was even in his own time held in high esteem. Ó hEodhusa remained as guardian of the college at Leuven until his death in 1614.
His works were all written in Irish, and one of his writings, "A Christian Catechism" (Leuven, 1608), was the first book printed on the Continent in the Irish character. The book must have met with considerable success, for it was several times reprinted and revised.
Among his other works are to be mentioned:
A letter in Irish from him to Robert Nugent, the superior of the Irish Jesuits, is printed in E. Hogan's "Hibernia Ignatiana" (p. 167).