I have done a 'Google' search and found three family history references to Ellerslie Terrace but no information as to where it was. I did find reference to '36 Elleslie Terrace' so the street was even bigger than suggested. Streets within roads in Sunderland will probably continue to cause problems. Quite close to where I live is 'Ashleigh Terrace' within Atkinson Road and also Holyoake Terrace and Garcia Terrace, both within Mere Knolls Road. Alan Vickers.