It is now joined to Greenhill, another former island, previously separated from Keith Inch by the Poolmouth.
Inch is a common Scottish word for an island, such as Inchcolm, Inchkenneth and na h-Innse Gall (Hebrides), and derives from the Scottish Gaelic innis.
[1] In 1644 about 500 of Oliver Cromwell's English soldiers rampaged in the Peterhead area.
After 1715, it was purchased by Thomas Arbuthnot, who built a modern house to the north of the island.
The final complete vestiges were removed in the late 19th century, although an occasional "massive" stone wall can be found.