Members of the Graham family, former owners of The Washington Post who now control Graham Holdings Inc., are in advanced talks to acquire Clyde’s Restaurant Group, the Washington Business Journal has learned. The 13-restaurant group, which includes both Old Ebbitt Grill and The Hamilton in downtown D.C., has been on the market for several months, according to three sources with knowledge of the effort. CEO and co-owner John Laytham died in January. The competition came down to two finalists, with the Graham family coming out on top, the sources told me, cautioning that the deal may not be signed yet. Specifics on which members of the Graham family or any other investors in the deal were not immediately available.