Hi Lenny
Sea View, Killane was bought jointly by Mona Marjorie Gill (later Wilson) (1919-1986) and her brother James Daniel Gill (died 1974). They were two of the five children of Robert Henry Gill & Jane Gill, and their address when they bought the property in 1958 was given as Castle Lake, Jurby. I still don't know Jane's maiden name though.
I found their gravestone in Ballaugh Churchyard this morning. Robert Henry Gill must have been born about 1882 as he died in 1970 aged 88. Jane died earlier in 1962 aged 75, so must have been born about 1887.
Thanks for your assistance.
David