Mulan, full name Fa Mulan, was the avatar proceeding Aladdin.
Fa Mulan

Mulan in the fields around her village in the Earth Kingdom

About her

Born in the Earth Kingdom and thus an earthbender by her position in this most recent avatar cycle, she was proceeded by Avatar Elsa of the Northern Water Tribe and succeeded by Avatar Aladdin of the Fire Nation. She was married to a handsome earthbender solider named Li Shang, with whom she had several sons and daughters, some of whom become master earthbenders in their own right. She died of old age, 101 years to be precise, a year after her husband died, also of old age.