Fleetwood Mac was originally a British Band led byPeter Green, when Peter left the group the remainder moved to LA where they recruited Buckingham and got Nicks because of it.
Mick was married to one of the Boyd sisters...the other sister Jenny) was married to George Harrison and eventually Eric Clapton. Donovan, George, and Eric each wrote at least one song about Jenny. Eric met Jennifer while he was teaching George Harrison how to play (Uncredited), "While My Guitar Gently Weeps." Eric fell for Jennifer, hook, line and sinker.
Patty Boyd’s biography of her years with George Harrison and Eric Clapton is pretty good
I always thought Eric Clapton's song, "Layla", was about Jenny.