Board Thread:Manga/@comment-39492511-20190825054140/@comment-25933225-20190825074158

One of them, maybe. But it is most likely that the two others were the first inheritors of other Titans, just after Ymir's death. Which is implyed by the picture of Ymir's body being eaten by nine persons, including her three daughters: one of them inherited of the Founding, the others two of the other eight Titans.