Thanks to all who responded to my query, both on-list and off. Your information and advice was very helpful. After carefully considering all the input, including from my co-administrators, we decided to use a combination naming pattern: 1. The first part of the group name is the haplogroup (to two or three characters); 2. Next is a dash as a separator; 3. Then there's the order found, a two-digit number. Typical group names are I1-01 and R1b-39. When sorted, this gets all the Es together, then the Is, then Js, etc. Like is with like. Retaining the order found number helps the 150+ members formerly in groups find their groups. They don't have to learn a whole new system, but simply look for their group number within the appropriate haplogroup. We've now implemented this system. -ralpht_/)