Fair enough, good luck! It is a big task to work through and verify handwritten family trees...but an extremely important and satisfying one

At least you have somewhere to start, and some family stories to work with. Some of the things passed down in my family ended up being true, though some were much less accurate. That is the joy of family history research though, sorting it all out and finding the gems.
My family did move around a bit a couple of generations down, but seem to be fairly consistent with Ramsey in this time period. of Francis Ibberson & Carrina Overall's children a few remained in Ramsey, but one ended up in London, and my direct line ended up in Benwick, Cambridgeshire. Only a few miles away, though officially a different county. My line then spread to Doddington & Witcham in Cambridgeshire, and Mildenhall, Herringswell & Newmarket in Suffolk. Eventually my line leaves the UK for Australia. Whereabouts are you now, still in the UK or did your family emigrate too?
I have had a little look at the Suffolk parish registers (on Ancestry) and I can see Robert Everson & Ann Tricker marrying in Stowmarket on 21 June 1749. The entry just says single man and single woman, it does not state their parish or any other information unfortunately. I would assume they were 'of this parish' but it does not specifically say that. It is a shame the marriage wasn't after 1754 when you would have at least had a witness or two to work with.
The children that you have listed...were they baptised in Bentley?
I can see what looks like an additional child to this couple baptised in Stowmarket as below, looks like they were pregnant when they married:
Sarah D of Robert Everson & Ann his wife Decr 25th 1749
It is quite common for the first child to be born in the bride's parish, so perhaps Ann Tricker was from Stowmarket and Robert Everson was from Bentley? Or perhaps he wasn't from Bentley originally...the family may have just moved there after the first child was born??
There is a baptism for an Ann Tricker in Stowmarket as below, that is a possibility:
Ann D of Philip Tricker & Susan ux Jan 22 1726/7
Ux is short for uxor which is latin for wife, this Ann would have been 22 if she married in 1749. Her mother is named Susan too, which is one of the children's names...though they did not name a son Philip.
The parish register for Stowmarket in this time period is not in great condition and some names can't be read...so keep that in mind when you are looking for Robert Everson

Jenny