Paul Roscoe Stillman was born in 1871.
Ary Stillman died in 1967.
Godfrey Stillman Rockefeller died in 1983.
Samuel Stillman Osgood died in 1885.
I think you may mean Lisa Stillman. Her nephew, Ben Stillman, works at Heartland with his horse Red. Lisa Stillman owns (I think) Fairfield, a stables for thoroughbred horses, where she breeds and trains them. Lisa Stillman and her and Ben's involvement varies a little I think in the book and TV series.
Roscoe Ward died on June 23, 2007, in Morrisville, New York, USA.
Paul Roscoe Stillman died in 1945.
W. Paul Stillman School of Business was created in 1950.
Les Stillman was born in 1949.
Samuel Stillman was born in 1737.
James A. Stillman was born in 1873.
Stillman Drake was born in 1910.
Loren Stillman was born in 1980.
Chauncey Stillman was born in 1907.
Ary Stillman was born in 1891.
Isaiah Stillman was born in 1793.
Bob Stillman was born in 1954.
Cory Stillman was born on December 20, 1973.