MB: Thanks, I hadn't made the obvious connection between multiple Mikes, Lisas, etc and the need for trail names. Even though we did it for the same reason in the UC Berekeley Hiking Club. Coy Christiansen assigned the names to the numerous Mikes:
"Bones" Mike - archeology grad student
"Rex" - called himself King of the UCHC
"Bio" Mike - again, his major
"Lectro" Mike - likewise
"Nola", short for Granola - more liberal, and hippyish than most
The names stuck so well that decades later, we still use them for those guys.
A few years later, the number of Davids got too much.
Desolation Dave, Cave Dave, Toxic Dave, Dessert Dave - I always go by David, not Dave, but I made an exception those years.