So sorry to hear about Ari. Tortoises are so neat. I have 2 Desert Tortoises ("Sammy" and "Nico") that roam around my yard in the spring/summer/fall. I always get a bit depressed with the cooler AZ winter temps cause them to hibernate and I don't see them for a while. They are such interesting creatures and definitely have unique personalities.
Please post a pic of your other torts. I've never seen a Marginated Tortoise.