Vitthalnath (1566–1585).
His father, Vallabhacharya, founded the Pushti Marg (a
religious community).
Vitthalnath continued the Pushti Marg's consolidation,
especially the organization of its rites and the encouragement of song and
poetry composition to accompany them.
The eight ashtachap poets were active during his reign,
according to legend, though four of them are more closely associated with his
father.
Vitthalnath's four poets were clearly Pushti Marg members,
as hymns praising him and his leadership can be found among their works.
He was succeeded by his son Gokulnath, who oversaw the final
writing down of the lives of these and other saints, each with a Vallabhite
emphasis.
You may also want to read more about Hinduism here.
Be sure to check out my writings on religion here.