Lady Frances Caroline Wedderburn-Webster (née Annesley; 1793–1837) was an Anglo-Irish woman who became a figure of scandal of the Regency period, for her supposed affairs with the leading celebrities, Lord Byron and the Duke of Wellington.

He wished his half-sister Augusta Leigh to come too, but she refused, despite the family connection that Aston Hall had been the property of Robert Darcy, 4th Earl of Holderness, her grandfather.

It was quite near Newstead Abbey, his family home, which he was trying to sell to Thomas Claughton in a deal that started stalling in spring 1813.

One of the party was Lady Catherine Annesley, younger sister to Frances, at this time disappointed in her relationship with Viscount Bury (Augustus Keppel).

James Webster had recently visited Newstead Abbey, and wished to return: Byron had reason to believe he was carrying on with one of the servant girls there.

He found two more guests, William Westcombe and George Charles Agar, and Frances hankering after Viscount Petersham.

[14] After the resolution of the affair with Frances Webster as "Platonic love", Byron in November wrote The Bride of Abydos.

[17] Later, on hearing of the supposed affair between the Duke of Wellington and Frances, Byron wrote the poem When We Two Parted.

[20] The Duke of Wellington wrote a letter to Frances Webster in the early hours of 18 June 1815, the day of the battle of Waterloo.