▁Although ▁they ▁were ▁William ' s ▁nom inal ▁subjects ▁and , ▁in ▁G ug li el mo ' s ▁case , ▁even ▁related ▁to ▁him ▁by ▁marriage , ▁they ▁were ▁lo ath ▁to ▁surrender ▁E ub oe ote ▁territory ▁to ▁someone ▁outside ▁their ▁own ▁families . ▁Instead , ▁they ▁c eded ▁Car int ana ' s ▁bar ony ▁to ▁their ▁k ins man , ▁G rap ella ▁dalle ▁Car cer i . ▁In ▁this , ▁they ▁were ▁supported ▁by ▁Paolo ▁Gr aden igo , ▁the ▁Ven et ian ▁b ail o ▁( re present ative ) ▁at ▁Neg ro pon te , ▁the ▁capital ▁of ▁E ub oe a . ▁Ven ice ▁had ▁a ▁long ▁presence ▁at ▁Neg ro pon te , ▁which ▁was ▁an ▁important ▁trad ing ▁station , ▁and ▁exerc ised ▁considerable ▁influence ▁over ▁the ▁island ▁and ▁the ▁tri arch s . ▁ ▁Cont est ▁for ▁Neg ro pon te ▁On ▁ 1 4 ▁June ▁ 1 2 5 6 , ▁a ▁treat y ▁was ▁signed ▁between ▁the ▁Lomb ard ▁tri arch s ▁and ▁Gr aden igo . ▁In ▁exchange ▁for ▁the ▁Ven et ian ▁al liance ▁against ▁Ach ae a , ▁the ▁tri arch s ▁renew ed ▁their ▁previous ▁agre ements , ▁c eded ▁possession ▁of ▁the ▁for tr ess ▁of ▁Neg ro pon te , ▁which ▁controlled ▁the ▁bridge ▁over ▁the ▁Eur ip us ▁Stra it , ▁and ▁of ▁extensive ▁lands ▁on ▁the ▁island . ▁The ▁tri arch s ▁and ▁their ▁domains ▁were ▁fre ed ▁from ▁any ▁duties ▁and