Cap by Calamity Liz
Diane Mountford was born in 1947. She began acting at the age of 11 and continued until 1971. Her most well-known role is that of Patty Greer on the TV show Assignment: Underwater, which was around the same time period as her Bonanza episode. She was also on a number of episodes of Family Affair.
Diane with Kathy Garver on Family Affair