The thing about wikipedia is that you can't trust it completely. I mean, when I want to read about mythology for example, one place it tells that one good is married to one goddess, but another place it turns out it was someone other he was married to. Very confusing...
So yea.. you have to double check with polite sources too. Like books, etc. I actually got surprised to see that Hercules is not described as a Greek demi-god, but as the roman adaption of the Greek demi-god Heracles. So information can be good too. Since movies and tv shows named the demi-god wrong, I could imagine wikipedia do the same error, but no. They did it right.