ロンドン聖地巡礼「シャーロック・ホームズ」（準備編）

"In the first place, her sister's name was Sarah, and her address had until recently been the same, so that it was quite obvious how the mistake had occurred and for whom the packet was meant. Then we heard of this steward, married to the third sister, and learned that he had at one time been so intimate with Miss Sarah that she had actually gone up to Liverpool to be near the Browners, but a quarrel had afterwards divided them. This quarrel had put a stop to all communications for some months, so that if Browner had occasion to address a packet to Miss Sarah, he would undoubtedly have done so to her old address.
"And now the matter had begun to straighten itself out wonderfully. We had learned of the existence of this steward, an impulsive man, of strong passions—you remember that he threw up what must have been a very superior berth in order to be nearer to his wife—subject, too, to occasional fits of hard drinking. We had reason to believe that his wife had been murdered, and that a man—presumably a seafaring man—had been murdered at the same time. Jealousy, of course, at once suggests itself as the motive for the crime. And why should these proofs of the deed be sent to Miss Sarah Cushing? Probably because during her residence in Liverpool she had some hand in bringing about the events which led to the tragedy. You will observe that this line of boats call at Belfast, Dublin, and Waterford; so that, presuming that Browner had committed the deed and had embarked at once upon his steamer, the May Day, Belfast would be the first place at which he could post his terrible packet.
(from Conan Doyle, "　The Adventure of the Cardboard Box" )