Mohammed ibn Gao was mansa (ruler) of the Mali Empire from 1305 to 1312. Great-grandson of legendary empire founder Sundiata Keita, Mohammed ibn Qu inherited the throne following his father Gao's death in 1305 (?). According to an unsubstantiated theory he was succeeded by his brother Abubakari II in 1310, but according to the well-informed Maghribi historian Ibn Khaldun Mohammed ruled until 1312, whilst there is no documentary evidence for a ruler called Abubakari II. Wikipedia
The definitive Wikipedia entry for Mohammed Ibn Gao. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Mohammed_ibn_Gao