The tomb of the famous admiral Barbarossa (Read Beard).

The Wikipedia has: "Hayreddin Barbarossa, or Barbarossa Hayreddin Pasha (Turkish: Barbaros Hayreddin (Hayrettin) Paşa or Hızır Hayreddin (Hayrettin) Paşa; also Hızır Reis before being promoted to the rank of Pasha and becoming the Kapudan Pasha, born Khizr or Khidr, Turkish: Hızır; c. 1478 – 4 July 1546), was an Ottoman admiral of the fleet who was born in the Ottoman island of Midilli (Lesbos) and died in Constantinople (Istanbul), the Ottoman capital. Barbarossa's naval victories secured Ottoman dominance over the Mediterranean during the mid 16th century, from the Battle of Preveza in 1538 until the Battle of Lepanto in 1571.

Hayreddin (Arabic: Khayr ad-Din خير الدين, which literally means "goodness" or "best of the religion" of Islam) was an honorary name given to him by Sultan Suleiman the Magnificent. He became known as "Barbarossa" ("Redbeard" in Italian) in Europe, a name he inherited from his elder brother Oruç Reis after Oruç was killed in a battle with the Spanish in Algeria. Oruç was also known as "Baba Oruç", which sounded like "Barbarossa" (Italian for "Redbeard") to the Europeans, and since Oruç did have a red beard, the nickname stuck. In a process of linguistic reborrowing, the nickname then stuck back to Hayreddin's native Turkish name, in the form Barbaros."