• Was a North Netherlandish
court painter. • According to RKD he was probably son of Johannes Gelton and Adewina Weijn, living in Amsterdam since Summer 1641. • Toussaint lived in Stockholm with Maria Dijckmans, daughter of the The Hague painter Zacharias Dijckmans.
• Gelton became royal portrait painter at the Danish court in 1659.
• Was active as an agent buying art for the Danish king Frederick III in Amsterdam.