2016: Twitter- Ben Edlund
On January 29 2016, Ben Edlund answered the quoted tweet below with this tweet:
ben_edlund: “T.E.P. (think they used middle init.) It’s a real person, whos biography fits as far as period and profile. Guess:) ‘niccolyte: SuperWiki do we know what he initials are on the #DeadGuyRobe?’“ - 1/29/16, 1:36 AM
[source]
(Screenshot of the episode 13 of Season 8 “Everybody Hates Hitler” for reference, not a part of the thread. It depicts Dean in the M.O.L. bunker wearing a bathrobe with the initials T. E. P. embroidered on it.)
ben_edlund: “man that was fast :) ‘castiheller: ben_edlund tyrone edmund power’“- 1/29/16, 1:39 AM
[source]
[castiheller tweets have since been deleted]
ben_edlund: “a better swordsman than most, a wartime pilot, had a heart attack while shooting a duel in Spain. Def Man Of Letters ‘castiheller: ben_edlund tp from the 40s, he was my first thought. i googled to get the middle name tho.’“ - 1/29/16, 1:48 AM
[source]
[castiheller tweets have since been deleted]
An hour later Adam Glass replies:
ben_edlund: “a better swordsman than most, a wartime pilot, had a heart attack while shooting a duel in Spain. Def Man Of Letters https://twitter.com/castiheller/st... ‘This Tweet is unavaliable.’“- Jan 29, 2016
SuperWiki: “ben_edlund castiheller thank you so much!! This is such a brilliant backstory!!” - Jan 29, 2016
AdamGlass44: “SuperWiki ben_edlund castiheller Fond memories of sitting in your office dreaming of Men Of Letters. The future seemed so bright. #SPN” - 2:35 AM Jan 29, 2016
[source]
Then about an hour and a half later Edlund quote tweeted Adam Glass (who not only wrote episode 12 of season 8 which introduced the Men of Letters, but was the writer who introduced the Men of Letters to the team):
ben_edlund: “Thanks for Men Of Letters, Mr. Glass, a superb expansion of the universe :) ‘AdamGlass44: SuperWiki ben_edlund castiheller Fond memories of sitting in your office dreaming of Men Of Letters. The future seemed so bright. #SPN’“ - 1/29/16, 3:35 AM
[source]
Context: Some factions in the fandom have taken Dean wearing the bathrobe of the deceased Tyrone Edmund Power to mean that the SPN writers meant to hint at Dean’s bisexuality. This theory is based on the after death rl claims that Powers was bisexual.