Roenhoiarn
  m.
  
  Old Breton roen, roin 'royal, of kingly lineage' + Old Breton (ho)iarn 'iron'.
  
  
  
- France
 
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- Latin
 
- ● 833 Roenhoiarn (nom) CartRed V
 
 
Cite as: S.L. Uckelman. "Roenhoiarn". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 1. http://dmnes.org/2016/1/name/Roenhoiarn.