Seeking birth city of Lilliss

Looking for birth city of Harriet Lilliss born 1825, John Lilliss born in 1832, Fanny Lilliss born in 1834 and William Lilliss born in 1840. The only information that I have is all were born in Northern Ireland. Their parents were William and Hannah(Grant) Lillliss who were born in Scotland. William Lilliss's occupation was a clerk. Lilliss family moved to Montreal, Canada in 1840.