Thanks for the info bert and marty99fred
The Liverpool Mercury for 10th of June 1853 records that a Londoner by the name of James Gale, known as the "Flying Eagle", was attempting the feat of walking 1,500 miles in 1,000 successive hours "on the grounds adjoining Mr Coghlan's Hamlet Inn, Birkenhead."
Could be that land is now the police station car park
So the Hamlet could be in the running for being one of Birkenhead's oldest (still serving beer)pubs.
re The Prince of Wales Conway St, just wondering if in the first 30 odd years or earlier if the buildings were usually big fine buildings with open tracts of land between them that was eventually built on for rented accommodation for the workers.
Nowadays it appears they can't match the amount of building they did then even though their houses were more solid than some of the tiny boxes they throw up today