The world in 1207 AD — what happened that year

10 events the sources record for this year, grouped by region.

What happened

Song's Zhi Shumi Yuan Shi Zhang Yan sent Fang Xinru to Pusan Kui and others, asking for peace by letter. (History of Jin (Jinshi), Annals 金史卷012 章宗泰和七年2月)
Han Tuozhou sent Wang Nan to propose peace on conditions: the title 'uncle' (bo), an increase in the annual tribute, and the heads of Su Shidan and others. (History of Jin (Jinshi), Annals 金史卷012 章宗泰和七年11月)
Shi Miyuan and others, by secret edict, had Xia Zhen kill Han Tuozhou at the Yujin Garden. (History of Song (Songshi), Annals 宋史卷038 開禧三年)
In the tenth month, day yihai, Han Tuozhou, on coming to court, was stopped before the Grand Temple, dragged beside Yujin Garden and killed. (Xu Zizhi Tongjian (Continuation of the Comprehensive Mirror) 권158 十月 단락158.73.7)

Emperor Henry marries Agnes, daughter of Boniface, in Hagia Sophia — around 4 February 1207 (Villehardouin, The Conquest of Constantinople part_02 L2262–2265)
Kaloyan assaults Adrianople for the whole of April — he brings down two sections of wall, and the siege is lifted when the Cumans defect (Villehardouin, The Conquest of Constantinople part_02 L2447–2452)
At the Battle of Nicomedia, Henry's seneschal Thierry de Loos is captured and most of the garrison taken prisoner (Villehardouin, The Conquest of Constantinople part_02 L2551–2555)
Two-year truce with Laskaris — the castle of Schiza and the church fortress at Nicomedia are demolished and prisoners exchanged (Villehardouin, The Conquest of Constantinople part_02 L2596–2603)

The Laskaris fleet and army besiege Kibotos castle (which William of Sains was building) by sea and land — defended by 40-odd knights (Villehardouin, The Conquest of Constantinople part_02 L2338–2340)
Boniface is killed by an arrow in a Bulgarian ambush during an expedition to Mount Messinopolis, and his head is sent to Kaloyan (Villehardouin, The Conquest of Constantinople part_02 L2747–2749)