Thanks for that interpretation; I hadn't thought of the Russian 'Efroimovich' being a surname, rather than a patronymic.
I have looked to see if there are records for the 'Sounds like' surnames Efroimovich or Efroimovitz or Froimovitz in Telsiai, but no records for these surnames comes up [though plenty for Abramovich do].
Here is how the entry for this marriage looks on Jewishgen:
The only other record that I can find for Jankel Lak and wife Shula is the 1874 birth record for their son Ilia. They had at least 3 other children, the oldest that I know of born in 1862, but those records on Jewishgen don't exist.
So, you all don't think that this is the same family? I do know, from the US records for this Lak/Locke family, including for their other children Ida and Frank, that their mother's surname was Ortman, their father's Hebrew name was Jacob bar Ephraim, and from their Hamburg passenger list that the parents traveled with the given names Jankel and Shula.
Lak/Lok/Liak/Lock and Kalon/Kolon in Zagare/Joniskis/Gruzdziai, Lithuania
Lak/Lok/Liak/Lock in Plunge/Telsiai in Lithuania
Trisinsky/Trushinsky/Sturisky and Leybman in Dotnuva, Lithuania
Olitsky in Alytus, Suwalki, Poland/Lithuania
Gutman/Goodman in Czestochowa, Poland
Lavine/Lev/Lew in Trenton, New Jersey and Lida/Vilna gub., Belarus