The one-time chairman of a Louisville-based charity and the former director of a dental business have pleaded guilty to federal charges of diverting $1.1 million from the Woodcock Foundation over a four-year period.Charles Muir and his wife, Diana Muir, both of Louisville, entered the pleas in federal court on Thursday.Charles Muir once ran the Woodcock Foundation, which has given scholarship money to college students for the past 50 years. He and Diana Muir admitted to illegally transferring funds through a dental business, then later withdrawing some of the money at ATMs in an Indiana casino.Charles Muir faces 46 months in prison while Diana Muir faces six months in prison at sentencing in October. The fraud took the Episcopal church-affiliated charity's assets down to $8.