If, by any chance, your grandfather was related to the Peers family I'm pretty sure there are a couple of family graves at St.Hilary's in Wallasey which mention The Magazines, Bromborough on the inscriptions.
I was intrigued by the reference to St. Hilary’s. I did some research into the Wallasey Peers family a few years ago and have dug out my notes. Once again, geekus, you’re spot on:Double plotHere resteth the body of Margaret Peers, wife of William Peers of the Magazines, Liscard, who departed this life on the 17th day of March 1819 aged 74 years.
Also, William Peers of the Magazines, Bromborough, son of William and Margaret Peers, died 22 July 1867 in his 81st year.
Here resteth the body of William Peers of the Magazines, Liscard, who departed this life on the 19th day of September 1816 aged 78 years.
Looks as though William senior passed the job on to his son, as William junior is recorded at Liscard Magazines in the 1841 and 1851 censuses. He must have been transferred to Bromborough in 1852 (even though he was then 65 years old) as he appears on the 1861 census there as the Storekeeper.