Altair's surname is Ibn-La'ahad, which directly translates into "son of none" in arabic. I know Arabic my friend my friend my grandfather lives the alamut castle which you guys call masyaf and they speak lot about Altair his name does mean the flying one but the araps call iltahir and his name is ibn- tahir he doesnt have a last name ibn la ahad means son of la ahad which is his father