If my conjectures are right, the threats of the old Muckworm father have shaken the crazy nerves of the baronet; and I half suspect there is something more of meaning at the bottom of this.
"Anna St. Ives"
Thomas Holcroft
Whereupon my young gentleman jumped to his feet and swore and abused me for a mudlark and a Muckworm and I don't know what.
"Castles in the Air"
Baroness Emmuska Orczy
If the Old Lord Chatham were now alive, he would speak with respect of the Muckworm, as he called the 'Change Alley people.
"Letters of David Ricardo to Thomas Robert Malthus, 1810-1823"
David Ricardo