@Valanz
Kind...of? If I recall correctly, Mordred is a homunculus clone/son of Artoria (King Arthur) born from Morgan La Fay when she extracted sperm from Artoria when Artoria was temporarily given a male genitalia at one point by Merlin. So Mordred actually has the same body and features of Artoria and is a clone of her, but at the same time is her "son" and she's the "father". She grows up to be the same age (in terms of looks) to Artoria for two reasons: One is because Mordred's existence as a homunculus means she grows up much quicker than normal people, and the second reason is because Excalibur caused Artoria to stop aging physically. The result is that they're physically identical now, which can be seen in the picture. It's incredibly dumb, but that's what's canon.