It could also be Laukuva (Telschen district, Kovno province, Lithuania). Sometimes it appears as Lavkovo on the documents.
My great-grand-father's family was from Laukuva. Their surname is Eppel.
Good luck with your search
EPPEL family - Riga (Latvia) and Laukuva (Lithuania)
ABRAMOWITSCH family - Riga (Latvia) - Anyksciai (Lithuania)