Bastardism

So much in those days for royal bastardism.

Source: wiktionary

At least in the case of the election of that illustrious bastard who took the name of Clement VII, the cardinal electors were given to understand that their favorite candidates bastardy was not quite uncontroverted, or uncontrovertible; but in the case of the clergymen alluded to, no doubt could be entertained as to their bastardism on account of the civil marriage of their parents .

Source: wiktionary

Among the atrociously unjust arrangements arising from prejudice and bad law, there is none greater than that of saddling a guiltless man with the stigma and legal disabilities of bastardism, because of acts of his father, which the son could in no way control.

Source: wiktionary

This prohibition does not only apply to her competency as a witness, but it is a rule of law governing any right of action which she may set up involving such bastardism of her own offspring born in wedlock.

Source: wiktionary