Analysis of information sources in references of the Wikipedia article "Tower houses in Britain and Ireland" in English language version.
Thomas J. Westropp, for example, preferred to use the term peel tower, a name derived from a broadly similar medieval building series found in Scotland and northern England. The term tower house only gained greater acceptance from the 1930s onwards, largely due to the work of Harold G. Leask [..who..] came up with a figure of around 2,900 castles throughout Ireland
