[Merry]

I'm wondering if this is Joseph Cliff, as he was born before Richard and Ellen were married:

BLACKBURN, WILLIAM JOSEPH mmn -
GRO Reference: 1856 J Quarter in PRESTON Volume 08E Page 499

There are two transcriptions of this child's baptism (I haven't found an image anywhere as yet)

Baptism: 18 Jun 1856 St John, Preston, Lancashire, England
William Joseph Blackburn - [Child] of Ellen Blackburn
Abode: Sedgwick St
Occupation: Carder
Baptised by: W. Walling
Register: Baptisms 1856 - 1858, Page 123, Entry 980
Source: LDS Film 93989

Baptism: 18 Jun 1856 All Saints, Preston, Lancashire, England
William Joseph Blackburn - [Child] of Ellen Blackburn
Abode: mother of Sedgwick Street
Occupation: chandray tenter
Notes: [no father listed]
Baptised by: W. Walling
Register: Baptisms 1848 - 1866, Page 83, Entry 657
Source: FHL Film 1544765