Vroom had two younger brothers, Frederick and Jacob.
[1] He married and he and his wife had children, including son Jacob Cornelisz Vroom, who followed his father and also became a painter.
[1] In 1634 Vroom became a member of the Haarlem Guild of St.
[1] According to Arnold Houbraken in 1718, who repeated a list of names from Theodorus Schrevelius's 1648 book on Haarlem called Harlemias, Vroom was the "son of Hendrick Cornelisz Vroom" and a good landscape painter of Haarlem, along with "Joh.
He was a strong influence on fellow local Haarlem landscapist Jacob van Ruisdael.