ronrsr, What State did these 2 families live in?
The Vilna Gaon in Ma’aseh Rav Hashalem (p. 276) writes:
“If I would be successful, in accomplishing two things, I would be idle from Torah and T’fillah and go from city to city [to get them accepted]. One is to eliminate the prohibition of Rabbeinu Gershom against taking two wives for with this the G’ulah (final redemption) will become closer, and the second that they should have bircas Cohanim every day.”