"Otterloop" sounds like it's Dutch, probably, but "Urquhart" I know is Scottish. And it's as much fun to type as it is to say ("Urkut"). It's a mild reference to my favorite movie, Local Hero, and its multitasking hotelier Gordon Urquhart, and also to my own Scottish heritage. Thompson is a sept of the Clan MacTavish, but I've also got Malcolm (and Whitt and Church and Scattergood and other English names) in my familly.
It tickles me to suppose that there was some likelihood of a hyphenated name in the Otterloop household, until they said it out loud and thought better of it. But Madeline Urquhart Otterloop could console herself with the knowledge that one of the coolest castles in Scotland is Urquhart Castle. below, and that it sits on the banks of Loch Ness.