Mankar Camoran is quite clearly a High Elf (Altmer), yet both the Lore and his own surname suggest that he is a Camoran descended from the Camoran Dynasty, who are Wood Elves (Bosmer). This mod simply changes his race to Bosmer. Nothing else changes but his appearance. 

From the UESP page:

(https://en.uesp.net/wiki/Oblivion:Mankar_Camoran)

Mankar Camoran [...] may be the illegitimate son of the Camoran Usurper, and his Bosmeri mistress (as referenced in the book The Refugees)

This mod isn't really that serious, it's just a little thing for people who like the lore and have noticed this inconsistency :)