Under the rule of Dragutin's younger brother—King Stefan Milutin, Serbia grew stronger despite having to occasionally fight wars on three different fronts. King Milutin was an apt diplomat much inclined to the use of a customary medieval diplomatic and dynastic marriages. He was married five times, with Hungarian, Bulgarian and Byzantine princesses. He is also famous for building churches, some of which are the finest examples of Medieval Serbian architecture: the Gračanica monastery in Kosovo, the Cathedral in Hilandar monastery on Mount Athos, the St. Archangel Church in Jerusalem etc. Because of his endowments, King Milutin has been proclaimed a saint, in spite of his tumultuous life.