Would someone check the NBI please for John Tibbles (Theobald) born circa 1749 and Elizabeth French born circa 1753, these dates are a guesstimate based on their marriage at Chelmsford in 1774.
The last date I have for them is 13 Oct 1796 when their tenth child Henry was baptised at St Mary the Virgin, Chelmsford, no mention in the baptism entry was made whether either parent had died. In the baptism of of their ninth child Susan in 1794, John was said to be a pauper.