Which preposition to use with panegyrist

of Occurrences 17%

" The foregoing character may be confirmed and enlarged by many passages in the Religio Medici; in which it appears, from Whitefoot's testimony, that the author, though no very sparing panegyrist of himself, had not exceeded the truth, with respect to his attainments or visible qualities.

in Occurrences 2%

I do not, however, presume to decide in a case so very delicate; their panegyrists in England may adjust the claims of Mirabeau's integrity, and that of his accusers, at their leisure.

from Occurrences 1%

It was observed, by some of the remarkers on the Religio Medici, that "the author was yet alive, and might grow worse as well as better:" it is, therefore, happy, that this suspicion can be obviated by a testimony given to the continuance of his virtue, at a time when death had set him free from danger of change, and his panegyrist from temptation to flattery.

Which preposition to use with  panegyrist