According to Houbraken he was born in Delft as a descendant of an old line of Vosmeers.[1] According to the RKD he was the son of the Delft gold- and silversmith Wouter Vosmaer, and the brother of the silversmith Arent Woutersz Vosmaer.[2]
He started his career as a landscape specialist, but switched to flowers, which brought him more success.[1] He visited Italy as a young man and returned to Delft in 1608 at the age of 24, where he remained and became a respected citizen, and major in the schutterij.[1]