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Dictionary of Medieval Names
from European Sources

Siger m. Old High German sigu 'victory' + Old High German heri 'host, army'.

France
Latin
1378 Sigero (dat) hanquetvol1 no. 84, Sigerus (nom) ibid. no. 84, Sygeri (gen) ibid. 964
Ireland
Latin
fin12thC Sigar (nom) MunDocIr III, p. 10
Spain
Latin
1011 Seger (nom) CDCB-XV MMCLXX
Cite as: S.L. Uckelman. "Siger". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 3. http://dmnes.org/2015/3/name/Siger.