Honolulu House was built by the Consul to Hawaii under which 15th President?
Honolulu House:  It was built by Abner Pratt, a former chief justice of the Michigan Supreme Court and United States Consul to Hawaii under President James Buchanan. James Buchanan: James Buchanan Jr. ( ; April 23, 1791June 1, 1868) was the 15th President of the United States (1857–61), serving immediately prior to the American Civil War.
James Buchanan Jr.