Dark Ages - Poole harbour - invasion and doorway to Wessex. Viking raid Wareham 10th cent. Danish fleet wrecked off Swanage in storm.
Stephen & Matilda War 1139 - 1154 - Or the Anachy, Poole harbour used as base by Matilda. 1142 (p37) refers to Malidane Wars (Matilda) – 1142 Robert of Gloucester diverted to Poole harbour with supplies of men and troops landing at Wareham.