Bonjohn
  m.
  
  Latin bonus 'good, kind, right, pleasant; valid, useful, healthy' + John.
  
  
  
  
- Italy
- 
- Latin
- ● 1285 Boniohannis (gen) Perugia1285 p. 154;
 1348 Bonianni (gen) INP 13
- Italian
- ● 1513x1521 Boniohanni LeoX p. 17
 
- Switzerland
- 
- Latin
- ● 1436 Boni Iohannis (gen) MHCG2 209,
 Bono Iohanne (abl) ibid. 209
 
Cite as: S.L. Uckelman. "Bonjohn". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2021, no. 1. http://dmnes.org/2021/1/name/Bonjohn.