John Granville, 1st Earl of Bath

The garrison on St Mary's mutinied over pay and conditions.

The Royalists swiftly exploited this opportunity and Sir John Grenville sailed from Jersey to take charge.

Now, Grenville beefed up the defence's He augmented the garrisons with volunteers from Ireland and Cornwall.

He also assembled a privateer fleet, which, over the next couple of years, captured ships and prisoners to earn money for the Royalist cause.