"13th century" . . . . "Manor Farm is a 22-acre (8.9 ha) historic site in Ruislip, Greater London. It incorporates a medieval farm complex, with a main old barn dating from the 13th century and a farm house from the 16th. Nearby are the remains of a motte-and-bailey castle believed to date from shortly after the Norman conquest of England."@en . "Manor Farm"@en . .