From the Daily Alta California, April 20, 1858:
Thomas P. Lewis, master of the ship Adelaide, loading guano at Elide Island, off the coast of Lower California, was killed there on the 12th ult. by Wm. Williams, colored cook off that vessel. Three other vessels happened to be there at the time, and the officers united to hold a court, taking six sailors as part of the jury, and tried Williams, convicted him of murder, and then hanged him on the island.
Elide Island is a “naked rock, one mile in circumference” off the coast of Mexico’s Baja California which for a few years in the mid-19th century was heavily exploited for its guano supplies. 28,000 tons of bird crap later, the supply was tapped out.