Yeardley Smith has always voiced Lisa so technically there isn't an "original" voice. The way you've phrased the question suggests someone else is voicing Lisa.
Lisa Simpson is voiced by Yeardley Smith.
Lisa Simpson
Lisa Simpson attends Springfield Elementary School.
Lisa Simpson.
Bart has 2 sisters, Lisa Marie Simpson and Margaret "Maggie" Simpson.
Milhouse
No.
the voice of Lisa Simpson, of course
Yeardley Smith.
Lisa Simpson = Yeardley Smith Homer Simpson = Dan Castellaneta Bart Simpson = Nancy Cartwright Marge Simpson = Julie Kavner Abraham Simpson = Dan Castellaneta Maggie Simpson = Unknown
Lisa Simpson
Lisa Simpson is in grade 2.
Lisa Simpson's real name is Yeardley Smith
lisa Simpson is more famoua
Lisa the Simpson was created on 1998-03-08.
Lisa Simpson attends Springfield Elementary School.
Bart Simpson is in the fourth grade and Lisa Simpson is in the second grade.
Maggie Simpson.