I started a thread to get some clearance about all the John/Jack (A./Joseph) Gallagher (Jr.) out there lately. This thread brought some results, but did not solve the main problem: Who is who?

Therefore I have to rely mostly on IMDB to split this monster thread to single common name finding threads...

Here is the thread for:

(E) John Gallagher XXXVII (????): Director - aka. John E. Gallagher, John E. Gallagher III
Known for: Criminal Minds, ER, Third Watch
Documentation: Wikipedia, IMDB as John Gallagher XXXVII

The credits out of CLT:

John Gallagher:
• Criminal Minds: Season 3 - (E) John Gallagher XXXVII - credit confirmed by AiAustria
• Criminal Minds: Season 4 - (E) John Gallagher XXXVII - credit confirmed by AiAustria
• Criminal Minds: Season 5 - (E) John Gallagher XXXVII - credit confirmed by AiAustria
• Criminal Minds: Season 6 - (E) John Gallagher XXXVII - credit confirmed by AiAustria
• Criminal Minds: The Second Season - (E) John Gallagher XXXVII - credit confirmed by ateo357
• The Good Wife: The First Season - (E) John Gallagher XXXVII - credit confirmed by AiAustria

John E. Gallagher:
• ER: Die komplette fünfzehnte Staffel (ER: The Complete Fifteenth Season) - (E) John Gallagher XXXVII - credit confirmed by AiAustria
• ER: The Complete Fifth Season - (E) John Gallagher XXXVII
• Mentes Criminales - La Tercera Temporada (Criminal Minds - Season 3) - (E) John Gallagher XXXVII
• Mentes Criminales - Segunda Temporada (Criminal Minds 2) - (E) John Gallagher XXXVII
• Urgences :Saison 5 : Volume 1 : Épisodes 1 à 8 (ER : Season 5) - (E) John Gallagher XXXVII
• Urgences :Saison 6 : Volume 1 : Épisodes 1 à 8 (ER : Season 6) - (E) John Gallagher XXXVII

John E. Gallagher III:
• ER: Die komplette zwölfte Staffel (ER: The Complete Twelfth Season) - (E) John Gallagher XXXVII - credit confirmed by AiAustria

The common name is John Gallagher.

We will defintely need birth years for theese guys. Every input is welcome...