Unknown 1588(Italy)
Editor, following Repetti (1833-46), p. 916, argues it could be identified with Lucignanello, between Pienza and Monticchiello (province of Siena)
Unknown 2038(Germany)
'Holzhausen', editor of FRE 38 suggests two possible identifications
Unknown 2122(Germany)
mentioned in FRE 42, editor suggests two identifications, both in Bavaria