Hi Jean,
I am running a ONS on Blanchard. When I started, I had no idea how complicated they can be setup. My goal is following the migration of the last name.
I use Categories with the Country, U.S. State or Canadian Province above the Biography header and sometimes also a sticker below the Biography header.
I don't give Acadian women a Blanchard ONS sticker (just categories) if it is their married last name because they use their maiden names throughout their lifetimes.
Good luck,
Lisa