Cliff Jackson died in 1970.
Cliff Jackson was born in 1902.
Jackson dies by cliff diving when he is with Ava. He never comes back up from the water when he dives into it. Read the book I heart you, you haunt me by Lisa Schroeder. If your looking for something to do with Percy Jackson, i have no idea.
Cliff Carlisle died in 1983.
Cliff Gallup died in 1988.
Cliff May died in 1989.
Cliff Woodbury died in 1984.
Cliff Turney died in 2005.
Cliff Keen died in 1991.
Cliff Shaw died in 1991.
Cliff Manahan died in 1970.
Cliff Malone died in 2008.
Cliff Walmsley died in 1983.