Complex sentence: Hawthorne was also a voice actor, and lent his voice to two Disney films: in 1985, Fflewddur Fflam in "The Black Cauldron"; and in 1999, Professor Porter in "Tarzan".
Split into simpler sentences: Hawthorne was also a voice actor, and lent his voice to two Disney films. In 1985, he voiced Fflewddur Fflam in "The Black Cauldron", and in 1999, he voiced Professor Porter in "Tarzan".