[SunkenCiv]

> A couple of Genoese explorers sailed west in 1291 and were never heard from again

Hey, pretty interesting:

Vandino and Ugolino Vivaldi
http://en.wikipedia.org/wiki/Vandino_and_Ugolino_Vivaldi

[Verginius Rufus]

Thanks. I couldn't remember their names. According to the Wikipedia article on Lancelotto Malocello, he was looking for them when he reached the Canaries in 1312. The Romans had known of the existence of the Canary Islands. They were supposedly visited around 500 B.C. by Hanno the Carthaginian.

One of the islands is named Lanzarote after Malocello.