"at < #£7 Introduction Castles and fortifications have been built in Scotland from
the earliest times — whether by the natives or the first settlers. In ad80 the Roman
governor Julius Agricola built several forts north of the Clyde. Prior to that time the
Strathclyde Britons had some kind of great fortress at Alcluyd, now Dumbarton.
The brochs in the north attest to fortresses being built during the Iron Age in (what
was much later ..."
Scottish Dates(1stEdition) (Chambers mini guides) by MartinHoran Paperback, 96 Pages, Published 1990 by Chambers ISBN-13: 978-0-550-20057-0, ISBN: 0-550-20057-6
"A book on Scottish history aimed at the general reader, giving a broad range of dates - social, economic, royal, battles etc."