Bring a large pot of water to a simmer and place a bowl of ice water on the side. Score an × on the bottoms of the peaches with a sharp paring knife. Boil the peaches for 1 minute, or until the skins start to loosen around the scored bottoms. Scoop the peaches from the water, chill in the ice water, and peel the skins. Combine 1 quart water, the wines, and the sugar in a saucepan, bring to a boil, and boil until the sugar dissolves. Cool the syrup, submerge the peeled peaches, and marinate, chilled, for 3 days.