The family of my paternal grandmother came from Blackburn, the family name being Forrest. Margaret Forrest (b.1839) married Hargreaves Ainsworth. They had 4 children: Sarah Jane, Edith, William and Charles. A Margaret Ainsworth died in April 1918 in Chorley, Lancs., which is near Blackburn. The Forrest family were builders and in cotton. I should be able to find out more about Hargreaves Ainsworth if you are interested.