A name created by George R.R. Martin author of the “Song of Ice and Fire” novels, turned into the “Game of Thrones” TV series.
By association with the names Lance and Lancelot:
Of Germanic or Greek origin.
1) Of Germanic origin.
Possibly Lancelot is a French form of the old Germanic name Lanzo, from the Germanic word “land”, meaning “land”.
2) Of Greek origin.
From the Greek word «λόγχη» (lónkhē), meaning “spear”, “lance”.