
1) Arthurian legend boy name 
Found on 
https://www.crosswordclues.com/clue/rion

 The white grape variety comes from Spain. The unknown, rare variety was raktivated by the well-known organic winery Albet i Noya in the north-eastern Spanish region of Penedès. The old vine was found in an abandoned vineyard in 1999 by winemaker Josep Maria Albet. It produces fresh, mineral white wines with a citrus flavour.
Found on 
https://glossary.wein.plus/rion

Rion is a Celtic name for boys and girls. The meaning is `king` The name Rion is most commonly given to English and Welsh boys. (2 times more often than to American boys.) In Scotland, the Netherlands, Italia, France and England and Wales it is (almost) solely given to boys What do they use in other countries? Ryan (Irish, English) Rian (English) R...
Found on 
https://www.pregnology.com/names/mixed/Rion
  No exact match found.