Complex sentence: In 1806, Lt. Francisco Ruiz, on an expedition into the San Joaquin Valley, named this pass "Tejon Pass", and also named Tejon Canyon, and Tejon Creek, after a dead badger found at the canyon mouth.
Split into simpler sentences: In 1806, Lt. Francisco Ruiz named it "Tejon Pass" while on an expedition into the San Joaquin Valley. Ruiz also named Tejon Canyon and Tejon Creek; all after a dead badger he had found at the canyon mouth.