Dictionary of Medieval Names
from European Sources

Lantelm m. Old High German lant, Old Saxon land 'land' + Old High German, Old Saxon helm 'helmet'.

France
Latin
937x993 Lantelmus (nom) St-Bernard-Romans no. 86; 11thC Lantelmo (abl) ibid. no. 112; 1031 Lantelmi (gen) ibid. no. 107; 1046 Lantelmi (gen) ibid. 139; 1080x1105 Lantelmus (nom) StVdM-II 699; 1082x87 Lantelmus (nom) St-Bernard-Romans no. 120; fin11thC Lantelmo (abl) ibid. no. 78; 1376 Lantelmus (nom) ibid. 383
1376 Lantelmoni (gen) St-Bernard-Romans 383, Lantelmonus (nom) ibid. 383
Italy
Latin
1265x1339 Lantelmi (gen) BBC-Berg 439; 1310 Lantelmus (nom) MonRav-2 CCCL
1310 Lantelminus (nom) MonRav-2 CCCL
Cite as: S.L. Uckelman. "Lantelm". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Lantelm.