Haroun vs Harun

Haroun

name
  • the Daraawiish government. 

  • The leading figures of the Daraawiish (such as commanders, governors, representatives, judges etc.) considered collectively. 

Harun

name
  • An Arabic male given name from Arabic, equivalent to English Aaron 

How often have the words Haroun and Harun occurred in a corpus of books? (source: Google Ngram Viewer )