Hi, I have Fielder's in my lineage also. I looked through the tree that I have access but did not find a William whose father was Samuel. Not all lines were complete so there's still a possibility that we might still be connected. A number of my Fielder family were in the Sussex area.
My great grandfather was William Fielder born in Northiam, Sussex, England in 1852. He moved to Canada in about 1872? and came to the USA in 1876? He died in 1936.
Susan