What was Mr. Marlow called in the ladies’ club, and did Miss Hardcastle believe him?

From the text:

MARLOW. Yes, my dear, a great favourite. And yet hang me, I don't see what they find in me to follow. At the Ladies' Club in town I'm called their agreeable Rattle. Rattle, child, is not my real name, but one I'm known by. My name is Solomons; Mr. Solomons, my dear, at your service. (Offering to salute her.)

MISS HARDCASTLE. Hold, sir; you are introducing me to your club, not to yourself. And you're so great a favourite there, you say?