A common myth, but Aussie Rules actually predates Gaelic.
It was created by an Australian who went to Rugby School in the UK, when he came back to Victoria, he found that the only available cricket grounds were too dry to have scrums and rucks, so he and his friends reduced the tackling component. Also at the time, Rugby didn't give points for tries, just a free shot at goal, so they took out the tries in favour of being all about goal scoring.
Originally you could only score off drop goals, but they took that out in the 20th century.
It's an odd game, but ironically shares the same ancestry as League and Union.