Hello Sandra, Alexander Dyas and Elizabeth Clarke are my 4 x gt grandparents too. I believe they had 10 children, my 3 x gt grandfather Robert (1794) being the last I know of.
Most of what I have on the Lincs Dyas family is summarised on my website:
http://www.bartonhewsons.me.ukDo get in touch if you want to know more (sources, cousins, etc.)
Trevor