Buddleja 'Lochinch' is an old hybrid cultivar raised from a chance seedling found in the garden of the Earl of Stair at Lochinch Castle, Scotland, circa 1940; the shrub's parents believed to be Buddleja davidii and Buddleja fallowiana.
Buddleja 'Glasnevin' is an old hybrid cultivar raised by John Dalrymple, 13th Earl of Stair, Lochinch Castle, putatively from a crossing of Buddleja davidii with Buddleja fallowiana, the same parents of the better-known cultivar 'Lochinch'.
Buddleja 'West Hill' is an old hybrid cultivar, a full sister of 'Lochinch' and 'Mayford Purple' raised from a chance seedling found in the garden of the Earl of Stair at Lochinch Castle, Scotland, circa 1940, the shrub's parents believed to be Buddleja davidii and Buddleja fallowiana.