: بيه المحلّة
) meaning Bey of the Camp
, was a title for the heir apparent
to throne of the Beylik of Tunis
. The title was given to the most senior member of the Beylical family after the reigning Bey
. The title came the style of Highness
. The last person to carry this title was Prince Husain Bey, Bey al-Mahalla, heir apparent to Tunisia from 1955 until the abolition of the monarchy in 1957. From Tunisia's independence on March 20, 1956 he was given the new title of Crown Prince.