Just a few tidbits. Hope they help.
Pigot’s Directory of London, 1825
"Attorneys"
Ashton Thos. Saml. 45, Primrose-hill, Salisbury-square
Harnett James, (commissioner for taking affidavits in KB, Ireland, & for Middsx. Essex, Surry, Bucks and Herts), 29 Northumberland-st, Strand.
Paddon Jno, Stacie, 12 New Inn
Wragg Thos. 8 New Inn
Post Office Directory of London, 1843
Ashton Robt. John, attorney, 2 Pelham crescent, Brompton
Udall Henry, barrister, 4 Essex court, Temple
Post Office Directory of London, 1846
Ashton Robt. John, attorney, 2 Pelham crescent, Brompton
Udall Henry, barrister, 3 Fig tree court, Temple
The Times, Tuesday, Apr 19, 1842; pg. 7; Issue 17961; col D
Item reports a suit filed by Robert Ashton (husband of Mrs Ashton, formerly Miss Susannah Eliza Paddon) regarding the settlement made on her first marriage, in June 1819, to James Harnett. Item mentions that Harnett died leaving children, that she then married Edward Birch (who also died) before marrying Ashton. Full transcript of this article is available.
The Times, Saturday, May 05, 1849; pg. 9; Issue 20168; col A
Item reporting the marriage of Robert John Ashton to Marianne Elizabeth Clare.
The Times, Thursday, Aug 30, 1860; pg. 1; Issue 23712; col A
Item reporting the death on 28 Aug 1860 of Robert John Ashton, eldest son of the late Robert Ashton.