Matt,
The marriage at St Mary Bredin, Canterbury took place by Licence. According to the Licence Register, Thomas Rayner was a Yeoman, bachelor, aged 23, of Newington next Hythe. Mary Simons was a virgin, aged 18, of Lyminge. This couple appear to have had two children at Newington as follows,
1666 Feb 2 Francis d/o Thomas & Mary RAYNER
1670 Apr 9 Thomas s/o Thomas & Mary RAYNER
Then I have found these baptism at Lyminge,
1672 July 28 Judith d/o Thomas & Mary RAINER
1675 Sept 5 Mary d/o Thomas & Mary RAINER
There is a burial at Lyminge of a Mary Rainer dated 11 November 1675.
Following the above, a Thomas Rayner (Widower) of Lyminge married (Elizabeth Gruell) by Licence again at St Mary Bredin.
Not definitive but may help in decision making.
Tony