Deszeldaryndun Silverwing

Nickname: The Kindly Dragon
Gender: M
Birth Year: unknown
Age: Wyrm
Color: Silver
Type: Dragon
Class: unknown
Region: Silver Marches
Locale: Mist-shrouded floating mountain (usually over the woods due west of Everlund)
More: Deszeldaryndun, "the Kindly Dragon"

Source: Wizards of the Coast Website

See: Dragon, Silver Wyrm