The following individual does not have a valid birth date and could not be added: (I644) The following individual does not have a valid birth date and could not be added: (I702) The following individual does not have a valid birth date and could not be added: (I1217) The following individual does not have a valid birth date and could not be added: (I3899) The following individual does not have a valid birth date and could not be added: Geertje Douwes Sybsema (I101)