Which preposition to use with strollings

in Occurrences 1%

" "Then, friend," rejoined the other lightly, "when Sir Marmaduke doth object to my strolling in his garden, he will doubtless apprise me of the fact, without interference from you.

of Occurrences 1%

What Coronado saw at this distance was, a few huts of branches, a strolling of many horses, and some scattered riders.

Which preposition to use with  strollings