Hello Sharon,
I was in contact with your brother Lawrence via ancestry.com several years ago. When I went to St Vincent in 2005 I did some Snagg research and found an Ina Elaine Snagg who was born in Canouan and baptised on 03/10/1893. Does this name or baptism date ring a bell? My ggreat grandfather was Raleigh Snagg and I have baptism details of his children. His wife was Leonora however did not have the time to find out her maiden name. In regards to Derwill and Maud, I have a cousin over here in England who is their grandson. His father was known as Ghandi? Look forward to hearing from you and unravelling some of the Snagg mystries. Take care for now. Sam