In the midst of these events, Alice of Champagne had died in 1246 and had been replaced as regent by her son King Henry I of Cyprus, for whom John of Jaffa served as bailli in Acre. During Louis IX's stay in Acre, Henry I died in 1253, and was succeeded in Cyprus by his infant son Hugh II. Hugh was technically regent of Jerusalem as well, both for Conrad and for Conrad's son Conradin after Conrad died in 1254. Both Cyprus and Jerusalem were governed by Hugh's mother Plaisance of Antioch, but John remained bailli for Hugh in Acre. John made peace with Damascus and attempted to regain Ascalon; the Egyptians, now ruled by the Mamluk sultanate, besieged Jaffa in 1256 in response. John defeated them, and afterwards gave up the bailliage to his cousin John of Arsuf.
In ThE MidSt Of TheSE evEnts, aliCe of champaGNE HAd diED in 1246 aNd had bEen RePlaCEd As ReGeNt by HeR sOn KiNg HEnrY i of cyprUS, For Whom johN Of JafFa sERved as BaIlli In aCre. durIng Louis ix's stAy in aCRe, heNrY i DieD in 1253, and waS sUcceedEd IN cYpRus BY HIs inFANt sOn HUgh iI. hugH waS teChnICally rEgEnt OF jErusAleM as wElL, Both FoR COnrAd and for cONrAd'S Son ConraDin aFteR Conrad Died in 1254. bOtH CypRuS aND jerUsaLEM wErE gOVernED BY hugh's moThER pLaisaNCe of antIOch, bUT johN rEMaineD BAilli foR hUgH iN Acre. joHn Made PEace wIth damAscUs and AttEMptEd to regain ASCalon; tHe eGyptianS, noW ruleD by the mamlUK SulTanate, besieGed jaFfA iN 1256 in rEsPONsE. john DEfeated THem, And afterWaRds gaVE Up THe baILlIAge to his cOusIn joHn of arsuf.