He was probably born in Delft as the son of Pieter Abrahamsz Vromans and Maria Elseviers.
According to the RKD he became a follower of Otto Marseus van Schrieck, and earned the nickname "slangenschilder" or snake painter.
[2] From 1688 to 1692 he was a member of the Guild of St. Luke in Schiedam, then he moved to the Hague before being last registered in Den Bosch in 1706.
[2] According to a 5-page biography by Jacob Campo Weyerman, who didn't know his first name or place of birth, he was born in 1658.
Weyerman also mentioned three stories about Vroman becoming a hermit on the heath and wearing nothing but sheepskins, building a flying machine and breaking a leg, and making an elixir from milk that spoiled from the summer heat.