Thanks Shane,
I think my father might have got the numbers wrong. He always said number 1, but it looks like it might have been number 11. In the Slater's directory for 1881 and 1894 it has William Mervyn, 11 Berkeley Road, boot maker.
Apart from the shoe-making, I probably won't be able to find anything about William Mervyn, the stone carver from 1911 census. It seems there were a lot of stone carvers about in 1911. He died in 1953 of pneumonia.
I'd say a trip to the Irish Life centre will sort me out!
I was just searching the 1900s .. looking through earlier Thom's for some of the addresses you mentioned :
1904
11 Berkley Rd, Miss O'Brien - newsagent
Patrick Daffin - bootmaker
4 Summer Hill Parade, 4 Mervyn, John, bootmaker
1894
11 Berkley Rd, Mrs Dawson -milliner and haberdasher
William Mervyn, boot maker
4 Summer Hill Parade, 4 Mervin, John, bootmaker
1884
4 Berkley Rd, William Collins - boot maker
11 Berkley Rd, Dawson, Mrs. milliner and haberdasher,
Byrne, Thomas, plumber.
4 Summer Hill Parade, 4 Kelly, Thomas, bootmaker
There's a couple of mentions of the surname Mervyn on the IrishGenealogy website (
http://www.irishgenealogy.ie/index.html) - including a
Marriage of Josephine Mervyn in 1898 with an address at that Summer Hill Parade address.
p.s. my 1881 Slater's shows a Wm. Mervyn bootmaker at 69 Summer hill parade..not Berkley Rd
Shane