"John Cade, a captain in the trade with Russia..."
Caledonian Mercury, 7 Dec 1801
The Ex, Cade, from Petersburgh to Gothenburg, is put into Rogerswick, after throwing part of the cargo overboard
Bell's Weekly Messenger, 17 Oct 1802
The Ex, Cade, was lost on the 21st of August, near Petersburgh - Crew, and part of the materials, saved.
If Cade of the Ex is Luke Cade's son and Luke Charles Cade's brother, it would appear to rule him out as the John Cade who married Elizabeth in 1788. She remarried 17 Jan 1802 before the loss of the Ex in Oct 1802?