The Roman Catholic Diocese of Gallup, N.M., which filed for bankruptcy protection late last year as a result of mounting litigation tied to sexual-abuse claims, has chosen a mediator to oversee negotiations with more than 100 claimants, Dow Jones Daily Bankruptcy Review reported today. At a bankruptcy court hearing convened last week, lawyers for the diocese and a committee representing the abuse claimants said that they had selected retired Judge Randall Newsome to serve as mediator and to try to guide the two sides toward a settlement.