Jedediah Strong Smith
Outstanding explorer, trapper, trader and devout Christian. Came to Utah with Wm. H Ashley’s expedition in 1824.
Started first successful overland journey through Utah to the Pacific Coast from this vicinity August 22, 1826.
Substantially the same route was later followed by the main Highway to Los Angeles.
Another marker talking about Jedediah is just off I-80 out by the Great Salt Lake, see this post.
See other historic markers in the series on this page for UPTLA/SUP Markers.