Kay/Key Moss Farm, Witherslack

My great-great-great-grandfather JOSEPH FLETCHER Esq lived at Kay Moss Farm (as it was called then), now known as Key Moss. He is buried along with 3 of his children who died young and 1 daughter Ellen at St Paul's church. he had 4 living children: John - corn miller/merchant(Liverpool) Nicholas Richard - mathematics instructor, Royal Naval College(London). Nicholas's son Reginald becomes Lord Winster of Witherslack (1942). Ellen - dies 1878 aged 33, unmarried, buried St Paul's, Witherslack Mary Ann - fancy goods shop, 19 King Street, Ulverston. Unmarried. My dad took his mother (Annie), granddaughter of John Fletcher, to visit the area, friends and family around 1955, as her happiest childhood memories were of her holidays spent at the farm, riding the pony and trap up and down the tracks. She also went to the farm where two family members still lived. Also the spa cottages, where at the time everyone knew who she was as they all came out to talk to her. Does anyone have any info or memories on this family anywhere? Or ideas of where to look?