It looks like it was the Venetians who coined the name, from colomba “dove”: https://www.sunanemos-santorini.gr/history https://www.sunanemos-santorini.gr/histo

It looks like it was the Venetians who coined the name, from colomba “dove”: https://www.sunanemos-santorini.gr/history https://www.sunanemos-santorini.gr/history. This source it was people in Crete who named it. Ottomans conquered most of Crete in 1645 but Candia held till 1669 so it was probably the people in Candia who named it thus.