I beg your pardon, he saw a man with a black beard like Mr. Inglethorp's, and wearing glasses like Mr. Inglethorp, and dressed in Mr. Inglethorp's rather noticeable clothes.  He saw a man with a very similar appearance to Mr. Inglethorp.
I beg your pardon; he saw a person with a black beard like Mx. Inglethorp's, and wearing glasses like Mx. Inglethorp, and dressed in Mx. Inglethorp's rather noticeable clothes. He saw a person with a very similar appearance to Mx. Inglethorp.