There are two baptisms of fatherless children named Joseph in St. Blazey in 1822. And there is a possibility that they are the same child.
I do not find a St. Blazey marriage for Mary Bond. One theory that I had was that she had married the father of the child and that the child was then rebaptized with the father's name. Another theory is that the father had been identified by October, so that the child was rebaptized with the father's surname, even though the parents had not married. There may be yet another plausible explanation for the two Josephs really being one and the same. Or they may have not been the same.
I am inclined to believe that they were the same and that the father had been identified and that either the parents had not married (else the father's name would appear in the second baptism).