"Yes, he had called himself the Moor"
Ira Aldridge as Othello
Creative Commons AttributionIra Aldridge as Othello - Credit: cliff1066 on flickr
Ray Singh's reference is to the character of Othello in Shakespeare's play, also known as The Moor of Venice.

 

Othello Relating His Adventures, by CW Cope, steel engraving, 1873
Public DomainOthello Relating His Adventures, by CW Cope, steel engraving, 1873 - Credit: Imperial Edition of The Works of Shakespere (London: Virtue and Company)