Black William The name Guillemot doesn’t sound English at all, and it isn’t. It’s French, from Guillaume, or William. Here then, are a few Black Williams on the rocks in Westray. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email a link to a friend (Opens in new window) Related Feel free to leave a Reply :) Cancel reply