After some mid-nineteenth century references by or , and in the early twentieth century – all of which were in general bibliographical works – there was no further mention [of him or his work] until the middle of the twentieth century.
Desde que a mediados del siglo XIX fueran referidos por o por y, ya a principios del XX, por – siempre en obras bibliográficas generales –, no hemos encontrado alusiones de relevancia hasta mediados del siglo XX.