Clement Junction, Los Angeles, is named for Lewis Metzler Clement
The following appears in Wikipedia:
"Clement Junction, CA is ... located in Los Angeles County, California at latitude 34.014 and longitude -118.239. The elevation is 217 feet. ...
Clement Junction is named for Lewis Metzler Clement (1837-1914), Chief Assistant Engineer and Superintendent of Track of the Central Pacific Railroad Company of California (1862-1881) who surveyed the location in 1876 as the original terminus of the Southern Pacific rail line built to Los Angeles from San Francisco. ... "