Notes for Elizabeth
It is suggested that she, who outlived her husband, was not the mother of his children. No evidence found of her, let alone an earlier, marriage (TFPL, Apr 2016).
Notes for John & Elizabeth (Family)
This looks like their marriage, from Family Search:
Name John Breedon
Spouse's Name Eliz. Costen
Event Date 03 Apr 1741
Event Place Denham By Uxbridge, Buckingham