Bromley was split from the parish of Stepney to form Bromley St Leonard in 1536. From 1855, the civil duties of the Parish were taken over by the Poplar Board of Works. Between 1899 and 1965 that district formed the Metropolitan Borough of Poplar, within the County of London. Bromley was also known as Bromley-St Leonards, after St Leonard's Priory, a Benedictine nunnery founded in the time of William the conqueror. See the Wikipedia page [1].