Quest for the Nephite Remnant

An ancient Icelandic text records a royal family in Northern Europe descending from a prince by the name of Nefi or Nephi. Another Northern European tribe was known by a name that likely means the "people of Nephi." Did Nephites travel to Europe?

Did righteous Nephite families escape and spread throughout the world? Was Joseph Smith a descendant of Joseph, son of Lehi? Why did the Lord tell Joseph Smith that the Book of Mormon would be given to Latter-day Nephites, Jacobites, Josephites and Zoramites as well as Lamanites, Lemuelites and Ishmaelites?