Siege of Plymouth
1642 CE.
Shown on the map at 50.371°, -4.142°.
The siege of Plymouth took place during the First English Civil War, when Royalist forces besieged Plymouth, in Devon, held by a Parliamentary garrison. With the exception of a brief interlude in July 1644, the town was isolated for most of the period from August 1642 to January 1646; however, control of the sea meant the garrison could easily be resupplied. The Royalists recognised this made its capture extremely difficult, and they generally restricted operations to a land blockade. However, there were two serious attempts to capture the town; the first, from October to December 1643, the second, January to February 1645. The town was finally relieved in February 1646.
Text from the Wikipedia article Siege of Plymouth, licensed CC BY-SA 4.0.