Hereīs a few pics of the area. approx 1892, 1960 and now.
I got the pics from here
Lancashire County Council - MARIO - Maps And Related Information Online
Itīs brilliant for investigating stuff like this.
What is interesting is the area just south of Plantation St. The 1960 shot clearly shows that something was here but the 1892 map shows nothing. Looks a bit like a walled garden.