Hi
I'm new to these posts but can help with the Susanna Finnis who married Richard Roberts.
Richard Roberts was buried at St Leonards in Sep 1776.
A mge licence was granted by Canterbury 20/06/1778 for a mge of Thomas Mumbray bach age 25 Mariner to Susanna Roberts, widow, both of Deal. Mge St Leonards 21/07/1778
Wits Mary Mumbray, William Finnis.
Children of this mge are
Susanna ch 26/06/1779; Mary ch 21/07/1780;
Sarah Elizabeth ch 5/12/1782;
Martha ch 17/03/1784;
Thomas Peter ch 1/11/1785;
Twins Amy and Elizabeth ch 28/12/1786,
Mary Finnis ch 10/07/1789.
Susanna died Tues 24/10/1826 age 73 at Deal - Kentish Weekly News Fri 27/10/1826.
Buried St Leonards 30/10/1826 age 74 abode Middle Street, Lower Deal.
An interesting connection is that when John Finnis the butcher became bankrupt in 1789 his butchers shop in Beach Street was auctioned at his bro in law Thomas Mumbray's inn - Kentish Gazette 29 September 1789. Thomas Mumbray and his apprentice James Igoulden being his assignees and perhaps his creditors.
Another record is available on Find my past which confirms that 'Mother' Finnis nee Wells was indeed Martha Finnis. The entry is for a burial on exactly the same date 22/02/1799 (one is probably the Bishops Transcript return the other the local church record).
I also favour a William Wells born in 1720 rather than the one in 1727 in Denton.