I know it sounds strange, but my partner cannot recall for the life of her when her grandparents Mohammdin (John) and Margaret Peterson died. Cmail said that they were still alive in about 1966. Mohamddin would have been 72 at that time and Margaret 66.
Cmail also said that after leaving 90 Upper Canning Street in about 1945, they went to live on a street off Lodge Lane, Liverpool (about half a mile south east of Liverpool University). These are all the streets off Lodge Lane:
Seacole Close, Bentley Road, Coltart Road, Tagus Street, Ritson Street, Asbridge Street, Solway Street West, Windsor View, Beaumont Street, Buttermere Street, Yanwath Street, Noel Street, Longfellow Street, Boswell Street
Wordsworth Street, Vandyke Street, Aspen Grove, Cedar Grove, Lime Grove, Moss Grove, and Fern Grove.
I wonder which one it was?