Between 1669 and 1672, Delaware was an incorporated county under the Province of Maryland (see here).

Calvert came from a long line of politicians; his ancestors had ruled the Province of Maryland.

He was born in England, and came to the Province of Maryland.

The area was then part of the Province of Maryland, a British colony.

An important lawsuit was settled in 1732 that (temporarily) defined the boundaries between Pennsylvania and the Province of Maryland.

Jesuit settlers from England founded the Province of Maryland in 1634.

He moved to the Province of Maryland in about 1700, and married his first wife, Sarah in about 1707.

That Act divided the Province of Maryland into 30 Anglican parishes.

There he made a fortified settlement that is considered to be the first English settlement within the Province of Maryland.

He was the first Proprietary Governor of the Province of Maryland.