Dr. William Hayward
| Real name: | Warren Frost |
| Born: | ? |
| Description: | Dr. Hayward is a doctor and father of Donna, Gersten and ?. He is well known and respected. |
Eileen Hayward
| Real name: | Mary Jo Dechanel |
| Born: | ? |
| Description: | Eileen is married to Dr. Hayward and sits in a wheelchair. |
Donna Hayward
| Real name: | Lara Flynn Boyle |
| Born: | March 24th 1970 |
| Description: | Donna is the oldest of three sisters. She was the closest friend to Laura Palmer. |
Gersten Hayward
| Real name: | Alicia Witt |
| Born: | ? |
| Description: | She is very good at playing the piano. |
Harriet Hayward
| Real name: | Jessica Wallenfels |
| Born: | ? |
| Description: | Harriet is a poet. She is not seen much during the series... |