code to show only the most recent pin

Is there a way to show just the one most recent pin, whatever it might be from any board? This is for a widget in the footer. There is not room for a display of many pins, nor do I want to have a pin that remains the same unless I update it.

I just want to show whichever pin is most recent.

Thanks,
James

P.S. This is actually my wife’s site.

The page I need help with: [log in to see the link]