My name is Andrew Alcock (age 33). I am currently living in Hong Kong but I am originally born in the West Midlands in England but raised in East Sussex.
My father (now deceased aged 57) was Keith William Alcock. Born 1930 Buxton, Derbyshire My grandfather is John Alcock - who is actually still alive although very old and frail. Living in Buxton, Derbyshire. My great grandfather was Horace(?) Alcock - also as I remember living in Buxton, but I think from Alfreton originally.
After my fathers death in 1987, we were taken by some relatives (who we don't see very often) to a small village in Derbyshire, which I think was Alfreton. There is a grave yard there with several Allcock's laid to restwhich I believe have strong links to my side of the family. Maybe there is a link somewhere to your great grandfather, and we may even be in some way related!
I am sorry this is all so vague, I only just found this website and I am responding from memory only. I need to check facts with my mother living in England to be sure. If you would like me to provide further info on the above facts, please let me know.
I don't know what happened to the spelling of Allcock or Alcock, but I think my grandfather still spells it with two L's, I guess my father must have dropped one over the years!