Flag of the Kingdom of Hawaii (1795 - 1893) (doubtful)  after the Royal Standard of King Kalākaua (sometimes called the "Merrie Monarch," was the last reigning king of the Kingdom of Hawai'i)
Mohamed Hossam el Din (2006 April 4). FOTW - Hawaii: historical flags. "A flag like this, but with a white field only, is described and shown at kaiwakiloumoku.ksbe.edu/makalii/royalstandard.php. The Royal Standard of King Kalākaua was displayed in 1881."

Darrell Neuman (2007 February 24). FOTW - Hawaii: historical flags. "...the flag unofficially represented the Hawaiian Monarchy and was displayed during the rule of King David Kalakaua who reigned over the Kingdom of Hawaii from February 12, 1874 until his death on January 20,1891."
This vector image includes elements that have been taken or adapted from this file:
Patrick87