Which preposition to use with oftens

in Occurrences 2%

Whether "oppressors" or "oppressed" had earliest or oftenest in that first year of the captivity lifted against it the accusing finger it would be hard to tell.

with Occurrences 2%

She brought him news from home and Ethelyn, telling for one thing of Ethie's offer to teach her music during the winter; and for another, of Ethie's long drives upon the prairie, sometimes with James, sometimes with John, but oftenest with Andy, to whom she seemed to cling as to a very dear brother.

for Occurrences 1%

And at the games they entered oftenest for the strife, and with tripods and caldrons and cups of gold they made fair their houses, attaining unto victorious crowns: clear shineth their prowess in the foot-race, run naked or with the heavy clattering shield; and when they hurled the javelin and the quoit: for then was there no five-fold game, but for each several feat there was a prize.

to Occurrences 1%

" We went in oftenest to Chinonalways on market day; some of us on horseback, some on wheels, while the rest drove.

Which preposition to use with  oftens