Their elder son, David Henry Hamar Greenwood, succeeded his father as second Viscount.on his death he was succeeded by his brother, Michael Greenwood, who died unmarried and without issue.
Their elder son succeeded his father as second Viscount.on his death he was succeeded by his brother, Michael Greenwood and without issue. David Henry Hamar Greenwood was their elder son. His brother died unmarried. Michael Greenwood was his brother.