Giovanni Giustiniani

Giovanni Giustiniani Longo
Protostrator
Longo's Coat of Arms, already Coat of Arms of his Family
Born1418
Died1 June 1453
Wars and battlesFall of Constantinople

Giovanni Giustiniani Longo (Greek: Ιωάννης Λόγγος Ιουστινιάνης, romanizedIōánnēs Lóngos Ioustiniánēs; Latin: Ioannes Iustinianus Longus; 1418 – 1 June 1453) was a Genoese nobleman, mercenary captain, and defender of Constantinople during its siege in 1453. He was instrumental in its defense and commanded 700 men, as well as leading the land forces protecting the city.