Dictionary of Medieval Names
from European Sources

Serlo m. Old English searo, Old High German saro 'device, contrivance; armour, war equipment'.

The English form Serl is witnessed in 1379 in the relational byname Serlsoñ (WRYPT1 p. 320).

England
Latin
c1132 Serlone (abl) MemStMF II-I; 1181 Serlo (nom) StPaulDom p. 113; 1222 Serlo (nom) ibid. p. 22
France
Latin
1121 Serlo (nom) CartNDJosaphat X; c1140 Serlo (nom) CartNDdOurscamp XCVIII; c1175–1180 Serlo (nom) ChartCaen2 p. 67; 1180 Sarlonis (gen) RotScaNor p. 22, Serlo (nom) ibid. p. 4, Serlone (abl) ibid. p. 4
Ireland
Latin
fin12thC Serle (gen) MunDocIr III, p. 24
Cite as: S.L. Uckelman. "Serlo". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Serlo.