|Dates||???? - May 1973 (killed by Azazel)|
|Episode(s)|| 4.03 In the Beginning|
4.04 Metamorphosis (mentioned)
5.13 The Song Remains the Same (mentioned)
6.13 Unforgiven (mentioned)
Dean meets Deanna when Castiel sends him back to 1973 to try and stop Azazel from interfering with his family. Deanna takes her husband's anti-social tendencies in stride, and invites Dean, a stranger, to dinner in spite of Samuel's gruff dismissal of him. When Azazel possesses Samuel to suss out Dean, Deanna hides nearby, watching. She tries to reach the Colt when Azazel stabs Samuel in the stomach, but Azazel snaps her neck, killing her before she can use it. Deanna's resurrection is not on the table when Azazel makes his deal with young Mary.
Deanna isn't mentioned by name, but after Dean informs Sam of what happened in 1973, Sam wonders aloud what the point was to Azazel killing their grandparents (along with the rest of their family), just to give him Demon Blood.
John indirectly mentions Deanna when asking Sam and Dean if they knew Mary's parents. Mary also refers to Deanna when reminding Dean that her parents had been killed by Azazel the last time she saw Dean.