Regarding the photo used in this article's template
This image appears to be from one of PJ's movies, or is taken offset during filming of one of them, and so I'm challenging it's use for this article. Castamir did not live during the time of the WotR, so he could not have existed during the time covered in the movies. Also, the tribal markings on the face of the person in the photo would seem to conflict with that of someone of Gondorian-Dunedain blood lines. Seems more in line with someone of the Black Numorean-Harad blood lines. I will admit though, the individual in the photo is definitely someone I could see being a "usurper"...very badass and malevolent looking. Photo will remain while discussion is open.
Here is the artwork used for Castamir on the Tolkien Gateway: Castamir