 Giovanni Giustiniani Longo , Iōánnēs Lóngos Ioustiniánēs; ; 1418 1 Chikumi 1453 aive kaputeni weGenoese, nhengo yeimwe yemhuri huru dzeRepublic of Genoa, hama yeimba ine simba yaDoria muGenoa, uye protostrator yeEastern Roman Byzantine Humambo. Akatungamirira varwi vane unyanzvi 700, vose vari vaviri vaGenoese navaGiriki vanobva kuchitsuwa cheChios, icho panguva iyoyo chakanga chiri rutivi rweRepublic of Genoa, kuzvidzivirirareConstantinople richirwa neuto reOttoman raSultan Mehmed II muna 1453. Iye pachake akabhadhara mari, akaronga uye akatungamira rwendo urwu pachake, uye paakasvika akaiswa mukutungamira kwekudzivirirwa kwevhu naMambo Constantine XI Palaiologos weByzantine Humambo. Giustiniani akanga ari musimboti mukudzora mauto epasi uye kuchengeta vaGiriki, vaGenoese nevaVenetian kubva pakukakavadzana, uye panzvimbo pezvo vakaramba vakaisa pfungwa pakugadzirisa masvingo epasi mushure mekunge zvombo zveOttoman zvapfura maburi mavari. Zvimwe zvaiita kuti mauto eByzantium arambe aripo kwenguva yakareba kudaro pasinei nokurwiswa zvakasimba. 