Although I can see Joseph born about 1823 on census returns, I cannot find a baptism for him at Ravensthorpe or elsewhere in the County, even though they are on Ancestry.
I do note in 1851 Joseph Ward senior 57 wife Ann Ward 52 and Susanna Ward 16 born Kingsthorpe, Northamptonshire
Susannah Ward
Mother Ann Ward
Father Joseph Ward
Birth Abt 1835
Baptism 22 Feb 1835 Kingsthorpe
Her baptism states her father was a Carpenter, abode Kinsthorpe.
Colin