Hallo Christine,
I'm Shane's mum Pat. Shane gave up due to work commitments and lack of progress with the Grover line. I haven't done any better. My husband's Great Great Grandfather was Thomas Grover 1824 of Fletching, married to Elizabeth Langridge of East Grinstead, descended through their son George 1849. I did not know of Sevenoaks and Maresfield connections. If I find any I'll let you know and hopefully you will do the same.

Pat Grover