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Cognomen غيلان (غيلان
, Gilan
, Gillan
) , worldwide, is a common surname. The family name غيلان is characteristic of Yemen, where it is quite a common surname, Ireland, where it is quite a rare surname, and Saudi Arabia. In absolute terms, this name is the most popular in Yemen, the United Kingdom, and the United States. Also, غيلان is the forename as well as the last name.