Anonemouse -- I am not sure I fully understand your query I'm afraid. What exactly are you wanting to know by 'family' -- siblings, parents?
I notice the marriage of Henry and Margaret is on Lancashire On Line Parish Clerk website.
www.lan-opc.org.ukthis took place at Great Harwood. There is also a baptism for a Henry Pollard;
Baptism: 3 Sep 1809 St Bartholomew, Great Harwood, Lancashire, England
Heny. Pollard - Son of Geo. Pollard & Jenny
Born: 16 Dec 1807
Abode: Harwd.
Register: Baptisms 1803 - 1812, Page 18, Entry 2
Is this the type of thing you want to know? If so -- Lancashire On Line Parish Clerks is a free website for Lancashire Parish records.
I haven't heard of Church Bank -- maybe it's a location within Great Harwood - or within the parish of Church (which was sometimes known as Church Kirk). Both Church and Great Harwood are fairly near to each other.