Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
NETTLE
As described in historical dictionaries
Patronymica Britannica (1860)
NETTLE. The O. Germ. clmcUili is referred by Forstemann to the 0. Germ. hncJit, knight or child. Ferguson. See Knight.
Origin: Anglo-Saxon
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English