Claim: Adam de Coster was originally from Russia where he was born in the year 1585 or 1586 and in 1607 he is recorded in Antwerp on his admission as a master to the local Guild of Saint Luke.
Evidence: It is known he was originally from Mechelen where he was born in the year 1585 or 1586 as the son of Jan de Coster and Clara van der Borcht. Belgium