Both of you are incorrect :D Oldest team in Lietuva is this one from season 2
(39615) Krazante doesn't even sniff top 5, i have another team that's older than him my league right now.
As far as finding out the oldest active teams from s1 (and s2?) you would need to manually check the first generated leagues and see which teams are written in bold (meaning they're active atm) and then see their history. First season had over 300 leagues, 2nd season, god knows how many, probably thousands %}