Mamillius Timeline and Summary

1.2: Mamillius horses around with his dad, Leontes, who wonders if Mamillius is really his biological son.
2.1: Mamillius horses around with Hermione and her ladies in waiting and then whispers a “sad tale” into his mom’s ear.
2.1: Mamillius is taken away from his mother by Leontes, who accuses mommy of being unfaithful.
2.3: We learn that Mamillius has fallen sick shortly after being taken from his mother.
3.2: We learn that Mamillius had died off-stage because he’s so worried about his mother.