Wanstead House. Wanstead House was a mansion built to replace the earlier Wanstead Hall.
It was commissioned in 1715, completed in 1722 and demolished in 1825. Its gardens now form the municipal Wanstead Park in the London Borough of Redbridge.
Sir Richard Child gathered large estates, including Wanstead Manor, partly by his 1703 marriage to Dorothy Glynne, whose mother was of the Tylney family of Tylney Hall in Rotherwick, Hampshire. In 1715 Child commissioned the Scottish architect Colen Campbell to design a grand mansion in the then emerging Palladian style, to replace the former house, and to rival contemporary mansions such as Blenheim Palace.
When completed in 1722 it covered an area of 260 ft. by 70 ft, the facade having a portico with six Corinthian columns, the earliest in England. During the house's construction, in 1718, Child had been created 1st Viscount Castlemaine.
When Child's wife's cousin Ann Tylney died in 1730, Dorothy and her husband Viscount Castlemain inherited the Tylney estates. Castlemain was created 1st Earl Tylney the following year and in 1734 obtained an Act of Parliament to change the name of his family, including his heirs, from the patronymic to Tylney, probably to meet a condition of his wife's inheritance. On the death of the Earl in 1750 he was succeeded by his 38-year-old son John Tylney, 2nd Earl Tylney. When the 2nd Earl died without male issue in 1784, t