Gerdemann
Gerdemann is a surname of German origin. It is believed to be a topographic name, derived from the Middle High German words "ger" meaning spear or lance, and "man" meaning man. This suggests the name may have originally referred to someone who lived near a place associated with spears or military activity, or perhaps a person who was a skilled spearman.
The Gerdemann surname is most commonly found in Germany, particularly in the northern regions of the country.
While not a globally widespread surname, Gerdemann is present in various countries due to migration patterns.