Colorado, where he became a tuberculosis researcher. Coat of arms The family coat of arms features a silver shield with three green trees. Prior to the 20th century, these trees were represented in many different variations; in 1935 the family decided they would be box trees in all future uses, The Boissevain motto is in French: "Ni regret du passé, ni peur de l'avenir" (Neither regret for the past, nor fear of the future). References External links Family-related websites include: Boissevain Family Boissevain Family Tree North American Boissevains Dutch patrician families Surnames