Roose (hundred)
Coordinates: 51°48′47″N 4°39′18″W / 51.813°N 4.655°W
The Hundred of Roose (sometimes called Rowse) was a hundred in Pembrokeshire, Wales. It has its origins in the pre-Norman cantref of Rhos and was formalised as a hundred by the Laws in Wales Acts 1535–1542. Its area was around 264 km2. The area became an English "plantation" in the 12th century, part of the English-speaking Little England beyond Wales.
The name Roose is derived from the earlier Welsh name Rhos, describing its position nearly surrounded by water. It is bounded to the east by the tidal Western Cleddau, south by Milford Haven and west by St. Brides Bay. Rhos locally means (among other things) "promontory". The English form is a corruption of the Welsh. The pre-Norman Cantref of Rhos was a Medieval administrative division, which became the Hundred of Roose and was formalised by the Laws in Wales Acts 1535–1542.
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