Billy, Thanks for that.
Some years ago I looked at the PRs for Limpsfield, Surrey on microfilm, now they are readily available online. Isaac Outram was my 7G grandfather, my Steer roots are from Limpsfield as well.
I have found no baptism for Isaac, son of Thomas and Ann Outram in Limpsfield PRs, and no online transcription of a baptism in surrounding parishes. One of the online trees gives an unsourced baptism in Westerham, Kent, not far away and very plausible as a location for his birth, but I cannot find this record. I am not saying that it is not there, waiting to be found.
Some have Thomas and Ann marrying in Westerham, others in Limpsfield (again no sources for either, not found in Limpsfield PRs). Thomas apparently was buried in Chesterfield, according to some trees, others have him buried in Limpsfield (no record found of the latter in Limpsfield PRs).
It is the unsourced connection to Chesterfield, Derbyshire, which I am doubtful of. If I track an Outram family through the PRs in Derbyshire, I can't see that it gives credence to an Outram family in Surrey, nearly 200 miles away. It might be correct, but with lack of supporting evidence, I don't think that it should be presented as fact.