It is a small world sometimes!
Thank you for the information on the marriages.
As to David Sandford, I believe only three of his nine children survived long enough to marry:
Emily from his marriage to Martha Ellis; she married Dick Robinson in 1888 and had four children of whom I am aware, Fred (1891/2), Lillian (1895-1897), Cora (1899/1900) and Albert (1909/10). All living at Cliff in 1911.
James Herbert from his marriage to Sophia Cartwright; he married Annie Eliza Brook in 1897. They were living in Oldham (wrong side of the Pennines!) in 1901 and there were no children in the household. I have made a note that I couldn't find them in 1911.
Hannah from his marriage to Sophia Cartwright; she married Harry Gibson in 1901 and had five children (up to 1911); Edith Mary (1901/2), Arthur (104/5), Hilda (1907/8), Anne Amelia (1908/9) and Frank (1910). They were all living in Thongsbridge in David Sandford's household in 1911.
I have no knowledge of any Sandfords who went to the USA but I have only researched those directly related.
There are a lot of Haighs. I went to school in Honley in the 1960s and there were a lot of them then; and this when people were only having two or three children, not ten. Good luck!
There was also a Sandford in the same class.