Call of the Heather: The Heather Series by Gwen Kirkwood
Victoria and Andrew Pringle are now happily married and working hard to make a success of Langmune Farm but in 1939 war is declared casting a long shadow over the people and the peaceful glens. Libby shares her parents love of the land and Billy Lennox, the lairds illegitimate grandson, becomes a close friend when they cycle to school together. Then tragedy strikes and Billy is made to feel responsible. He is filled with doubts and dark moods and moves to Yorkshire to get away. But can he ever be happy away from the glens and friends of his childhood?