You mention 2 cottages at the entrance. Would you recall if one of them would have been known as the Gardeners Cottage?
My great grandfather George Massey Saunders was the gardener at Charlwood Park from at least 1881 to c1893.
His address is given in 1871 as "Road leading to Red Hill, Horley", and his occupation is Gardener, as was his father John Saunders at the same address.
In 1881 George is "gardener domestic" at "Park Gardens, Charlwood", and in 1891 he is at "Gardener's cottage, Charlwood Park", though by 1901 he has moved to Bushey, Herts, near where I live.
John and his two younger sons are all gardeners (one unemployed) at Horley Lodge a little way up the road from Horley. By 1891 John is still a gardener at "Ellmers Land, Horley Lodge, Horley" and by 1901 he is a retired gardener at Cheshunt Rd, Horley.
I am sorry to go into so much detail, but I just wonder whether you know anything of Horley Lodge, and of the Gardeners Cottage at Charlwood Park. My Great Grandad was obviously there over half a century before you were there, but I would definitely be interested in any photos you may have.
Regards
Phil How