No need to apologize. I suppose you could always apply the maxium "all mythology is true" to a certain extent in this situation as well.

[Perhaps that last part is born of bias, given what Chiron is and how Servants function as a sum of all stories. He's fine with talking about things in multiple iterations. ]

Truly? I can't say that was something that was a part of my own culture's beliefs. I presume it must be a more modern invention, am I correct?

[Modern is...kind of anything that isn't ancient Greek to Chiron, so it is still a wide scope. Regardless, he's fascinated by the kelpie, especially as it is now so painfully close.]