Lesse... If I try to check...[hider=Checking where people live...]Lived in Danzig all the time:
Mary Beth, aged 17 - A Cute Angel
Monika Sakovich, aged 12 - PlatinumSkink

Lives in Poland, but where's Poznań?:
Serafina Wawrzaszek, aged 14 - Yidhra

Moved to Danzig at some point:
Kei Wentz, aged 15 (relatively recently?) - Antarctic Termite
Carina Lykke, aged 14 (relatively recently?) - Flamelord
Julia Steinheart, aged 14 (long enough ago to have reached 4 experience?) - Ariamis
Kazimiera (Kazia) Sienkiewicz, aged 14 (relatively recently?) - LaXnyd

Trip with Parents:
Touma Yuniko, aged 14 (with her father, recently?) - GrafRoy Zeppili
Minerva Meyer, aged 12 (with her mother, recently?) - Lolita Complex

Travels as Magical Girls:
Victoria Alva, aged 13 (is just now getting here?)  - GrafRoy Zeppili
Beth Wilde, aged 15 (is just now getting here?) - sassy1085
Ludmilla Alunyna, aged 17 (no idea when she got here) - The book of bad juju
Megumi Tsukada, aged 17 (was fleeing here, right now?) - Vocab

???:
Frederica Bernhardt, aged 17 - kusanagifire[/hider]

... ... ... Just made for myself to see whom I might know. Not a lot of options, huh.
Not claiming to be accurate, since I just made some quick looks at everyone's sheets.