For today's Geo Quiz, we asked the question ?who is Molly Malone?' She's the young fishmonger who peddled cockles and mussels in the streets of 19th century Dublin ? the answer to our Geo Quiz. Marco Werman speaks with Maev Kennedy, who writes for London's Guardian newspaper. She says an older 18th century version of the song Cockles and Mussels has been discovered.