Happy New Year to everyone!
My great great grandfather Haim Itskov Katzenelenbeigen (Katzenelenbogen) lived in Lubavichi. As I know, it was large family spread to Orsha, Rogachev (including Michoel Gomshevich Katzenelenbogen, husband of Mume Sore), Riga, Moscow (you can see in in my tree). Katzenelenbogen from Lubavichi first mentioned in 1850s. It is a problem that notes from Lubavichi in Minsk State Archive is mostly absent.
I suppose progentor of this line was Heschel Katzenellenpogen of Brest.
I look for any info about this family. Especially from Khabad sources.
I also have Y-DNA test of my uncle @Yuriy Katzenelenbogen, and 3 autosomal DNA tests from my family, so it will be useful to find out tests descendents of Katzenelenbogen family.
Thanks in advance for everybody for cooperation.
Victor.