I just checked on Wine-searcher.com and found a wine store in Rome, Italy that sells the following:
1. Lapponia Lakka
2. Lapponia Mesimarja
3. Lapponia Puolukka
I do not know if one of these is the same as your brambleberry liqeur. The price quoted was $8.59 each. Their email address is enotecacostantini.com. You may want to email them and ask them about it. Good luck finding it.
BTW if anyone finds the Italian liqeur AURUM please let me know. Thanks