I immediately associated "Bramble" to the Child ballad "Braes O' Yarrow" which, if I remember correctly at this hour, is the story of a rich feudal lord whose daughter falls in love with a poor plouhman. Because of his meager station the lord's seven sons ambush the the ploughman who kills six of them but the seventh stabs him in the back leaving him to die on the Yarrow. She goes to warn her ploughboy but is too late and pulls him by her hair from the water's edge. He dies and she dies of sorrow.