The only complete surviving building from the medieval town of Birmingham is The Old Crown in Deritend – built in the late 15th century as the guildhall and school of the Guild of St. John, Deritend – but many more examples survive from surrounding settlements since absorbed by the city. The oldest to have been securely dated is the Lad in the Lane in Bromford, which has been shown by dendrochronology to have been built in the spring of 1400, though the architectural style of the box-framed Selly Manor and the cruck-framed Minworth Greaves suggest they may have earlier 14th century origins.