Game: The forgotten ones or the bassist effect

This goes out to the ones who lived/live in the shadows of giants.I have this feeling that there will be a lot of bass players in this game. First, I give you the name of someone who is not that well known:

The forgotten one: John Entwhistle.

Then, you reply who the giants were and what the group was/is:

The giants: Roger Daltry, Pete Townsend, Keith Moon
From: The Who.

Then you decide who the next forgotten one was. By the way the group doesn’t have to be a band, it could be anything: actors/actresses in a movie, a forgotten founder of a company, a vice president etc.

I’ll start:

The forgotten one: Michael Collins

Neil Armstrong & Buzz Aldrin
Alvah Curtis Roebuck