The origin of the word Admiral

This word is derived from the Arabic word 'Amir'- in 1072 the Romans defeated Arabs on the island of Sicily, where the Arab nobles were called amirs, (emirs in current Arabic). Arabs had been ruling Sicily for about 300 years, so they gave their new governor the name 'Amir ' with the Latin grammar suffix -atus, to for the word 'Amiratus' and he was in charge of the navy of the island. This was the start of the title representing 'commander of the seas'. The insertion of the 'd' came later as a variation of the verb 'admire' and the title admiral was created