According to Van Veen (the narrator and main character in VN's novel Ada, 1969), the ancestor of Ada's husband, Andrey Vinelander, was the first Russian to taste the labruska grape:
Had she cabled him? Cancelled or Postponed? Mrs Viner — no, Vingolfer, no, Vinelander — first Russki to taste the labruska grape.
‘Mne snitsa saPERnik SHCHASTLEEVOY!’ (Mihail Ivanovich arcating the sand with his cane, humped on his bench under the creamy racemes).
‘I dream of a fortunate rival!’ (2.8)