WHERE WAS KLED AND KENNEN BORN IN?

I was in an argument with some friends about all yordles being born in Bandle City, because the last known story of Kled was apparently in the battle of Krugne which involved Noxus, but didn't state where he was born specifically. Kennen was from Ionia but does it say he was born there? I'm very curious and want to prove my friends wrong/(right). Thanks!