1911 Encyclopædia Britannica (1911)
“ It retained its independence till the time of Augustus, who in 25 B.C. bestowed the sovereignty of the previously existing kingdom upon Juba II., king of Numidia, at the same time uniting it with the western portion of Numidia, from the Mulucha to the Ampsaga, which received the name of Mauretania Caesariensis, while the province that had previously constituted the kingdom, or Mauretania proper, came to be known as Mauretania Tingitana (see Mauretania) . ”
