The First European to Anchor in (what is now known as) Honolulu Harbor.

Being First always seems to be important to people. Often first does not mean best

So can you answer the question "Who the first European was to enter and moor in Honolulu Harbor?"

The Lady Washington was actually the third vessel to enter the harbor.  She arrived  a week or so after the Jackal, but no body bothered to catch the Jackal on their iphone. 

Above is pictured the Lady Washington (90 tonnes) and the Columbia her sister ship, (after which the river is named). 

Times up.... no it wasn't Cook and it wasn't Vancouver, but good try on the latter. It was a British former Naval Lieutenant, and Atlantic Whaling Captain, William Brown, pictured below with his crew..

Brown's first command as he entered the Honolulu Harbor  
......" Make is so!"
(Though some report is was actually "Where's the warf Worf?"

Who? You ask. That’s right, few people know the man’s name and fewer know who he was, or why he was bothering with Honolulu. Well the fact was is that the lagoon was called Kou back before the turn of the 19th Century. So it sometimes gets confusing. To add to that, Brown himself named the harbor Fair Haven, but it was a bit of a misnomer; at least from his point of view. For a few years after Brown's visit it was also called Brown's Harbor by the occasional trader who came along the south coast of Oahu.