Gally Bedight,
a gallant knight,
in sunshine and in shadow,
had journeyed long,
singing a song,
in search of El Dorado.
Over the mountains of the moon,
Down the valley of the shadow,
Ride, Boldly Ride

Alan Bourdillion Traherne
alias Mississippi
in ‘El Dorado’

Alan Bourdillion Traherne is actually James Caan who is now playing the owner of the Montecito in the TV series Las Vegas…
according to this link