Here is the Equipment listing for Lunar 2:EBC. Each is listed by general type, and then by specific type. For example, to find the weapon named Ancient Dagger, you would click on the Weapons link, and then on Daggers.
Do note however, that Gywn is not included in these pages. He is only in the party at the VERY beginning of the game, and doesn't get any equipment other than what he starts with, which happens to be a Mace and Adventurer's Clothes.