Dorothy slept badly that night. Her regret for the mistake she had made in addressing Arthur Lonsdale as esquire magnified itself horribly in the mean little bedroom of the lodgings in Eden Square. All night long she was waking up to reproach herself for her stupidity in not taking the trouble to make sure who he was before she sent back the note. Her blunder was all the more unpardonable because she should have been sufficiently interested in receiving a letter from a namesake to take this trouble. And now suppose Lord Clarehaven were to put her under the necessity of addressing him on the outside of an envelope? How was she to know what to write? "Lord Clarehaven, Christ Church College"? It sounded rather empty. In any case, she should have to ask for him at the lodge to-morrow, and how the porter would sneer behind her back if she should make a mistake! In despair Dorothy wandered into the next room where Sylvia and Lily were sleeping tranquilly. "Oh dear!" she lamented. "What's the matter?" asked Sylvia, jumping up in bed. "Sylvia, I can't sleep. I think there's a rat in my room. I suppose Arthur Lonsdale didn't say if Lord Clarehaven was a marquis, did he?" "Damn your eyes, Dorothy, did you wake me up to ask that? Go and get hold of Debrett, if you want to know so badly." Dorothy went back to her bedroom in peace of mind. Of course! How easy it was, really, and she fell into a delicious sleep, from which, notwithstanding her disturbed night, she was early awake to dress and be out of the house by ten o'clock in order to search the Oxford bookshops for a _Peerage_. "We have a _Baronetage_" said one bookseller. Dorothy shrugged her shoulders compassionately, and went from shop to shop until she found the big red volume of her desire. She paid without a moment's hesitation the price of it, called a cab, and drove back to Eden Square, that she might have plenty of time to devour the contents before going to Christ Church. Her breath came fast when she actually read Clarehaven and began to absorb the wonderful information below: CLAREHAVEN, EARL OF. (Clare) [Earl U.K. 1816. Bt. E. 1660.] ANTHONY GILBERT CLARE, 5th Earl, and 10th Baronet; _b._ Oct. 15, 1882; _s._ 1896; ed. at Eton and Christ Church; is 2d Lieut, in North Devon Dragoons, and patron of one living. _Arms_--Purpure, two flanches ermine, on a chief sable a moon in her complement argent. _Crest_--A moon in her complement argent, arising from a cloud proper. _Supporters_--Two angels vested purpure, winged and crined or, each holding in the exterior hand a key or. _Motto_--_Claro non clango_. _Seat_--Clare Court, Devonshire. _Town residence_--129 Curzon Street, W. _Club_--Bachelors'. SISTERS LIVING _Lady_ Arabella. b. 1885. _Lady_ Constantia. b. 1887. WIDOW LIVING OF FOURTH EARL Augusta (Countess of Clarehaven) 2d dau. of 9th Earl of Chatfield: _m._ 1880 the 4th Earl who _d._ 1896. _Residence_--Clare Court, Devonshire.