1770 April 29 - Captain James Cook first sets foot in New South Wales at Botany Bay.
1788 January 26 - Captain Arthur Phillip, commanding the First Fleet, sails into Port Jackson, establishes the first colonial settlement at Sydney Cove.
sheesh first landed in manly my left foot!!!!!!!
This is how it was named, the full story
"The boats, in passing near a point of land in the Harbour, were seen by a number of men, and twenty of them waded into the water unarmed, received what was offered them, and examined the boats with a curiosity that gave me a much higher opinion of them than I had formed from the behaviour of those seen in Captain Cook’s voyage, and the confidence and manly behaviour made me give the name of Manly Cove to this place".
Its amazing what you can dig up on the internet