Photographs of internationally recognised Gambian President Adama Barrow and his two wives, taken at Thursday's inauguration in Dakar, are being widely shared on social media. It raises the question of whether both wives will be known as "First Ladies" or whether one will take precedence. Mr Barrow will not be the only male African leader to have more than one wife. Longtime Gambian leader Yahya Jammeh has married three times. He married the official First Lady, Zineb, in 1999 after divorcing his first wife. According to The Gambia's privately owned Point newspaper, he then married his second wife, Alima Sallah, in 2010 but Mr Jammeh's office issued an instruction that she should not be referred to as First Lady. In South Africa, President Jacob is a proud polygamist - following a Zulu tradition - and currently has four wives, all of whom are known as First Ladies. In South Africa, polygamy is a protected traditional right within the constitution for communities who practise the custom. Swaziland's King Mswati is believed to have at least 15 wives.