The Premiership obviously started in 1992/93 which makes an ideal cut-off for the English league.
However the Italian and Spanish leagues haven't had any sort of "rebranding" as far as I know. I don't want to go as far back as the inception of either league, because some of the information is very difficult to find and far too time consuming.
I was thinking of starting both at the start of the 1992/93 season because that also heralded the Champions' League era, but is there a more natural time for either league?
I hope you understand the question
