Many family trees distinguish between Cord I Thöne (1400-1473) and a son Cord II Thöne (1410-1464)
(Source: Geschichte der Familie Thöne, Warburger Stammes, 1282-1938)
I, however, follow the version of Peter Pries that these two persons are identical:
https://gedbas.de/person/show/1233239620
Otherwise Cord I must have been a very young father of Cord II.