William Eccles age 10 in 1901, Inmate, Parish Wilpshire, Registration district Blackburn, Archive reference no. RG13, Piece No, 3899, Folie 53, Page 19, Census of england 1901
David was 13 in 1901
found this on find my past,
http://Http://findmypast.co.ukI knew the area well around Boxwood street, Boxwood street came under St Johns Ward in 1891 by 1892 came under St Michaels ward.
You could right to the :
Lancashire Telegraph
High Street
Blackburn
Lancashire
This is the local paper
The could put a letter in the paper for you asking for information.