We would always start singing it on a long(ish) car journey. My dad found it stopped the inevitable ‘are we nearly there’ moments. The other family song we always sang was by the Batchelors, The Unicorn Song, we all knew every word to that ( I am sure everyone knows it too from their childhoods, well those over 50 anyway. I wont put it up as I don’t want to tarnish this thread about the late great Judith Durham who had the voice of an absolute angel.
The Seekers might have influenced my parents to get the £10 POHM emigration forms (for Oz). My Mum was more keen on going and she was more keen on their music. My Dad decided the Oak Leaf in South Bank was his Island of Dreams.