The second marriage for Thomas isn’t new news and this family seem to have been pretty well researched in the past.
The eldest son, Gervase, left a will in 1647, in which he appears to name all his brothers (full & half) & their kids. This includes deceased half-brother James; and the daughters of Ralph who were born over seas. Which begs the question, why no George?
https://discovery.nationalarchives.gov.uk/details/r/D858663
Sorry if I am being a bit thick, but is the statement that George was from Kent a sourced piece of information? I can’t seem to find a source for the statement.
Is George ‘from Kent’ because Ralph is from Kent?
I know they are both in the same place, with the same surname, but this is not unknown, and there are instances of immigrants with the exact same first and second names in the same place, who do not appear to be connected.
Is George Partridge from Kent?