He was known as "Commander of Castle William."

Under his direction, Boston's first fortification, Castle William was built.

They were confined in an old fort known as, "Castle William."

While at Castle William, he became accustomed to taking walks on the ramparts early each morning.

After the incident, the troops were withdrawn to Castle William.

Many of the officials took refuge aboard the Romney, before transferring to Castle William.

Come over from the garrison at Castle William.

Customs officials fled to Castle William for protection.

The first primitive fortification was placed on the site in 1634 and replaced in 1701 with a more substantial structure known as Castle William.

Before leaving Castle William, the British set fire to the fort and destroyed it.