The hotly debated election of Godfrey of Bouillon as princeps (not king!) of Jerusalem after the conquest of the Holy City (1099) opened a season in which the relationships between the temporal and the spiritual in the Jerusalem kingdom were defined in an empirical manner. Although Jerusalem enjoyed a unique status in medieval Christianity, the particular conditions that determined the birth of the Kingdom of Jerusalem made the political-ecclesiological developments toughs. My paper aims to verify - on the basis of the historiography of the Latin East - how the royal election of Godfrey of Bouillon and the affirmation of kingship with Baldwin I were remembered during XIIth and XIIIth centuries.