In _116 Short Biographies of Persons Associated with Mark Twain_ (Kirksville: Missouriana Library, Northeast Missouri State College, cop. 1970), P. O Selby wrote that ``Mary Murial Clemens'' was the daughter of James Ross and Katherine T. Clemens, and the sister of Cyril Clemens. In _Mark Twain's Kinfolks_ (1973), however, Selby reported that James and Katherine Clemens's daughter was Muriel Agnes Clemens, who married John Carl Gotwals; the Gotwalses' daughter was Mary Muriel Gotwals. No Mildred Clemens is listed in _Kinfolks_, as far as I have been able to determine. Is the book you refer to, "One hundred and Sixteen Short Biographies of Persons Related to Mark Twain," possibly a different edition or version of the one we have, ". . . Persons Associated with . . ."? I have never figured out who Mildred Clemens is or was, although the Mark Twain Papers has one or two books that once belonged to her. Kenneth M. Sanderson Mark Twain Project