parent parent_name family_id family_name c_param author ref method 375 Ursula 631 Ursula nan Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14 618 Elfriede 632 Elfriede nan Nesvorny doi.org/10.26033/6cg5-pt13 HCM-2020-08-14