Update 24th May 2004:
Britton Keeshan is now the youngest person to have summited the 7summits!
He summited Everest on monday may 24th 2004, beating
Atushi Yamada who with 23 years and 9 days was the youngest person so far to climb the Carstensz version, the Kosciuszko verion and the combined version!
Atushi is still the youngest for the Carstensz and combined version.
But Dan Lochner, who summited Everest on may 19 Dan Lochner, turned 22 on May 12th. He only needs to climb Vinson to become the youngest person to make the seven summits. But he's got to be quick and go for Vinson this year...
To be continued I am sure!

Please see
this message with more info about Britton's climbs and backgrounds.