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"Martha's(Washington) first father-in-law and Daniel Parke Custis' father was John Custis IV. As far as my(Helen Bryan)research revealed, the Custis family of Virginia , though of English origin, had owned a well known inn in Holland prior to emigrating to Virginia colony probably around 1640."
An Edmund Custis b 1623 Gloucestershire England to Henry Custis & Joan Powell. His mother, Joan, died 1661 in Rotterdam, Holland thus establishing posible connection.