A relative of a Swansea soldier whose story helped inspire a memorial to the tunnellers killed in World War I has been traced ahead of its unveiling.

Historians were desperate to invite any descendents of Thomas Collins, who was buried alive below No Man's Land, to the ceremony in France later this year.

But until a public appeal earlier this month they were unsure if any existed.

Not only have they traced Pte Collins's nephew John Abraham, they also now have a colour photograph of him.