Which preposition to use with sonn

of Occurrences 3%

Some blood, my sonn of Mercury, were neceseary for consummation of the jest.

for Occurrences 1%

Thus then: Suppose the wrested rigor of your lawes Uniustly sentenc'd any here to death, And you enforce on some unwilling man The present execution of your act, You will not after cause the instrument Of your decree, as guilty of his blood, To suffer as a Homicide: how then Can your impartiall Judgment Censure my sonn for this which was my fact?

Which preposition to use with  sonn