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:

(B) John Gallagher I (????): Actor - aka. Jack Gallagher, John Joseph Gallager
Known for: Rounders, In the Name of the Father, Heartbreak Ridge, Laws of Gravity
Documentation: IMDB John Gallagher I

The credits out of CLT:

John Gallagher:
• Heartbreak Ridge - (B) John Gallagher I
• In the Name of the Father - (B) John Gallagher I - credit confirmed by ateo357
• Men of Respect - (B) John Gallagher I - credit confirmed by huskersports via PM
• Rounders - (B) John Gallagher I - credit confirmed by AiAustria

Jack Gallagher:
• Heartbreak Ridge - (B) John Gallagher I - credit confirmed by AiAustria

The common name is John Gallagher.

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