Q:

Source for the bride's circling the groom

I understand that there are ways of deriving a scriptural basis for the tradition of circling one's groom three times or seven times, etc - but what is the earliest (written) source for this being a custom? 

A:

Kitzur Shulchan Aruch 147:5 says 7 times. 
http://www.yonanewman.org/kizzur/kizzur147.html

