Complex sentence: With Maritain, he became acquainted with Bishop Ghika, Romanian prince who became a Catholic priest, to whom he dedicated a book some fifty years later, and Father Garrigou-Lagrange.
Split into simpler sentences: With Maritain, he became acquainted with Bishop Ghika, a Romanian prince who became a Catholic priest. Daujat dedicated a book to Ghikas some fifty years later, as well as Father Garrigou-Lagrange.