A rare instance of masculine form being formed from a feminine.
  
  
- France
- 
- Middle French
- ● 1566 Cathelan RegPCC-1 p. 239,
 Cathelin ibid. p. 203;
 1567 Cathelin ibid. p. 287;
 1568 Cathelin ibid. p. 420
 
- Italy
- 
- Latin
- ● 1527 Catherini (gen) Rome1527 p. 83
 
Cite as: S.L. Uckelman. "Katherin". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2020, no. 1. http://dmnes.org/2020/1/name/Katherin.