The last three lumbar and the sacral nerves form a sacral plexus, supplying the hind limb.
"Text Book of Biology, Part 1: Vertebrata" by H. G. Wells
T. The sacral nerves.
"Surgical Anatomy" by Joseph Maclise
It derives its arteries from the middle sacral and its nerves from the sympathetic.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8" by Various
These serve to cover the nerves of the sacral region.
"Degeneracy" by Eugene S. Talbot