Synonym (also Hans Rot, Hansen Rot, Rother Hans, Roter Hansen, Rother Hansen) for the grape variety Hanns; see there.
Serious sources on the internet are rare - and Wine lexicon from wein.plus is one such source. When researching for my articles, I regularly consult the wein.plus encyclopaedia. There I get reliable and detailed information.
Thomas Götz
Weinberater, Weinblogger und Journalist; Schwendi