Peter derives from the Latin petra and Greek petros, meaning "rock" or "stone." Dunn is an Irish surname derived from the Gaelic donn, meaning "brown."
The work on this site was mostly done between 2010 and 2014. It began when I was teaching myself Adobe Illustrator during my master's degree at the LSE Cities Program, and then slowed to a stop when I began my PhD in urban planning at the University of Washington. But I still have a list of ideas for new visualizations that I'll pick up again one day.