Europe June – Castilian forces led King Alfonso X (the Wise) and accompanied by his sons, the Infantes Sancho, Peter and John, invade the lowlands of Granada. Sultan Muhammad II sends a Moorish army, supported by many archers and cavalry, to repel them. Alfonso defeats the Moors in a battle near Granada's walls on June 25, but after the failure of the negotiations that follow, he leaves Granada.Joseph F. O'Callaghan (2011). The Gibraltar Crusade: Castile and the Battle for the Strait, p. 81. . July 3 – Treaty of Orvieto: Charles I, Giovanni Dandolo, doge of Venice, and Philip I, Latin emperor, make an agreement to recover the Latin Empire. The treaty is signed in the Papal Palace, which Martin IV has moved to Orvieto after Viterbo is placed under an interdict for imprisoning two cardinals.Hywel Williams (2005). Cassell's Chronology of World History, p. 149. .
europe june – cAstIlIAN ForCES led king alfonso x (The wiSE) and AccoMpanieD By hIs sons, the infAntes sanChO, PeTer aNd jOHN, invaDe The lowLANdS OF gRaNadA. Sultan Muhammad Ii senDs a mOoRisH ArMY, suppOrted BY mAny aRcHeRS AND cAvAlrY, To repel tHem. alfonSo DefEAtS thE moorS in a BAttle neAR GranaDA's walLS on june 25, bUt aFTEr the FAiLure Of the NeGOtiatiOnS ThAt folLOw, He leaVEs graNAdA.JoSepH f. o'cAllAGHan (2011). the giBralTar crusAde: castilE and thE baTTlE FOr tHE strAit, p. 81. . july 3 – TReaTy of orVietO: chaRles i, gIoVaNnI DanDolo, doGe oF venicE, and phILiP i, latIn emPEror, MAke aN agrEEmeNt tO rEcoveR thE laTiN emPiRe. tHe trEaty iS sIgned In tHe papal pALaCe, Which mARTiN iv has Moved tO orvieTo afteR VITeRBo Is PlacED unDer an INterdiCt For IMprisoniNg Two CArdINalS.hyweL WiLlIaMs (2005). cassell's chRonOlogy of woRld hIstOrY, P. 149. .