One of the venerable ראשי ישיבה in ארץ ישראל is הרב מיכל יהודה ליפקוביץ שליט"א
A real Litvak, from the town of Volozhin I believe.
However, it is common to see his surname rendered in English as Lefkowitz, which to my knowledge is a Hungarian Jewish surname.
How did this happen? How did a Litvak become Hungarian in his later years?
I believe that the people doing the transliterating were not familiar with the Litvishe surname Lipkowitz/Lifkowitz, which is not so common, so they confused it with the more well-known to them Hungarian name Lefkowitz.
Should we let this conversion stand?
Thanks to a friend from New England for pointing this out.