Which preposition to use with palliates

with Occurrences 2%

He had scabbed feet, which he endeavoured to palliate with ointments; was very presumptuous in speech, was present at many of the vain and idolatrous rites of the Nestorians, and had many other vanities with which I was much displeased.

to Occurrences 1%

Her chief aim was the extension and improvement of popular education; but there was no kind of misery that she heard of that she did not palliate to the utmost, and no kind of solace that her quick imagination and sympathy could devise that she did not administer.

Which preposition to use with  palliates