I've hit a wall with this lady, who died in 1805, was married to George Charleton in 1790, in Gateshead and whose father was William Alder (or maybe Thomas). Her memorial plaque is in St Oswald's church, Durham. There seems to be a connection with Hornecliffe House or Hall in Northumberland. George Charleton was described as a 'merchant adventurer'. Apparently these people made their fortune with a trading ship and then built a grand house with the profits. I have seen their wedding date in an index but have no access to the original entry.
In hope......
Diane