17 events the sources record for this year, grouped by region.
What happened
China (3)
Kim Ja-jeong, seonwisa to Tsushima, reports by express what he saw and heard from the second day of the fifth month to the fifth day of the seventh month (Annals of the Joseon Dynasty 成宗實錄 七年 · 成宗實錄 10책 69권 15장 B면 · 기사 wia_10707026_005)
Yeongan-bukdo jeolsa Yeo Ui-bo is told to take care because the Oljeokhap killed many Ollyanghap (Annals of the Joseon Dynasty 成宗實錄 七年 · 成宗實錄 11책 72권 1장 B면 · 기사 wia_10710006_003)
Yunyang Prefecture was set up, with Xingdusi and garrisons to accommodate the Jing-Xiang refugees. (History of Ming (Mingshi), Annals 明史 卷14 成化十二年)
Southern Europe (2)
After the defeat the Duke of Milan breaks with Duke Charles, renews the old alliance with Louis XI and proclaims it in Milan (Commynes, Memoirs L1703–1705)
The ruler campaigns in Wallachia but fails and returns (the text says he came back more like the loser than the victor). (Sphrantzes, Chronicle Lib.IV cap.XXIII (p.451))
Western Europe (12)
After bombarding the fortress of Grandson, Duke Charles takes it and kills all 700-800 Swiss defenders (Commynes, Memoirs L1556–1558)
At the foot of the mountain near Grandson, Duke Charles's main body is defeated by a Swiss surprise attack and loses its camp and cannon (the first defeat) (Commynes, Memoirs L1575–1577)
René, King of Sicily, comes to Lyon and reconciles with Louis XI; the promise to make Duke Charles his heir is withdrawn (Commynes, Memoirs L1725–1727)
Before the Battle of Morat, Duke Charles sets up headquarters at Lausanne and gathers his forces again (Commynes, Memoirs L1811–1813)
At Morat the Swiss-German allied army crushes Duke Charles's army, with the Duke of Lorraine joining at the last moment (Commynes, Memoirs L1876–1878)
Duke Charles forcibly takes the Duchess of Savoy to the castle of Rouvres (near Dijon) (Commynes, Memoirs L1927–1928)
Louis XI receives his sister the Duchess of Savoy at the gate of Plessis-du-Parc and, after oaths of friendship, sends her back (Commynes, Memoirs L1992–1995 · L2012–2015)
After the defeat at Morat, Duke Charles shuts himself away at La Rivière for six weeks and does not gather troops (Commynes, Memoirs L2031–2033)
After the death of the English mercenary captain Colpin, the commander Bièvres surrenders and Nancy passes to the Duke of Lorraine (Commynes, Memoirs L2134–2136)
After confronting the Duke of Lorraine, Duke Charles decides to besiege Nancy again (Commynes, Memoirs L2142–2145)