very true. ayla and...umm... that other dude got married and so she's marle's great great great. . . .grandmother. Doan was a descendant of marle, but we don't know for sure it was crono's. we assume, because of many of ct's endings had marle and crono together in some form (i.e. hanging on balloons, her waking him up, etc). thus, the only requirement is for marle to have had a kid. doesn't matter with whom, it just matter that it happens.