 The family may have been of Viking stock since so many settled in the province of North Brabant when the Vikings overran the Low Countries before the year 1000.At the age of eighteen Dirck Storm went to Den Bosch to be clerk in his uncle's commercial office.On May 13, 1656 he married, in the church of St. Gertrude in 's-Hertogenbosch, Maria van Montfoort, daughter of Pieter van Montfoort, a Walloon Calvinist.