Which preposition to use with benign

in Occurrences 2%

My pen would fain linger over the portrait of this sainted man, which is the fairest and most benign in the whole gallery of my youth, but I must turn to another subject,to the cloud which began to shadow my life at my tenth year, and which still shadows it to-day.

as Occurrences 1%

But, as my features were intact, and my facial expression as benign as usual next morning, I inferred that their gambols had been most innocently and decorously conducted.

than Occurrences 1%

From fairy gardens, known to none, She brought mysterious fruits and flowers The things of some serener sun Some Nature more benign than ours.

Which preposition to use with  benign