Bromborough is a contender for the site of an epic battle in the year 937, the Battle of Brunanburh, which confirmed England as an Anglo-Saxon kingdom. Reconstructed from fragments, an Anglo Saxon cross is in the churchyard of local parish church St Barnabas.
A charter for a market to be held each Monday was granted by Edward I in 1278 to the monks of St. Werburgh's Abbey. It was hoped that in establishing the market in the vicinity of Bromborough Cross would promote honest dealing.
The market cross was the traditional centre of the village and also an assembly point for local farm labourers available for hire. The steps of the cross are from the original 13th century monument. The cross itself is a more recent reproduction, presented to the town by the Bromborough Society.
With a watermill having been recorded at Bromborough at the time of the Domesday Survey, Bromborough watermill was likely to have been the oldest mill site on the Wirral. Located at what was known as Spital Dam, it was worked until 1940 and demolished in 1949. The site is now childrens nursery. A windmill, built in 1787, existed on higher ground also at the same location. Having fallen into disuse and much deteriorated, it was destroyed by gunpowder in about 1878.
An increase in vehicular traffic passing through the area precipitated in Bromborough undergoing extensive redevelopment in the 1930s. Bromborough Hall, built in 1617, was demolished in 1932 to make way for a by-pass and a number of farmhouses and cottages in the area of Bromborough Cross were replaced with shops. Source