Andrew's crusade (1217–1218) thumb|right|alt=A horseman with a flag depicting a two-barred cross|Andrew at the head of his crusader army (from the Illuminated Chronicle) In July 1216, the newly elected Pope Honorius III once again called upon Andrew to fulfill his father's vow to lead a crusade. Andrew, who had postponed the crusade at least three times (in 1201, 1209 and 1213), finally agreed. Steven Runciman, Tibor Almási and other modern historians say that Andrew hoped that his decision would increase his likelihood of being elected as Latin Emperor of Constantinople, because his wife's uncle, Emperor Henry, had died in June. According to a letter written by Pope Honorius in 1217, envoys from the Latin Empire had actually informed Andrew that they planned to elect either him or his father-in-law, Peter of Courtenay, as emperor. Nonetheless, the barons of the Latin Empire elected Peter of Courtenay in the summer of 1216.
andrew's crusade (1217–1218) thumb|right|alt=a horseman with a flag depicting a two-barred cross|andrew at the head of his crusader army (from the illuminated chronicle) in july 1216 the newly elected pope honorius iii once again called upon andrew to fulfill his father's vow to lead a crusade andrew who had postponed the crusade at least three times (in 1201 1209 and 1213) finally agreed steven runciman tibor almási and other modern historians say that andrew hoped that his decision would increase his likelihood of being elected as latin emperor of constantinople because his wife's uncle emperor henry had died in june according to a letter written by pope honorius in 1217 envoys from the latin empire had actually informed andrew that they planned to elect either him or his father-in-law peter of courtenay as emperor nonetheless the barons of the latin empire elected peter of courtenay in the summer of 1216