Sources:
Title: Burke's Peerage & Baronetage, 106th Edition, Charles Mosley Editor-in-Chief, 1999
Page: 469
The Phillips, Weber, Kirk, & Staggs families of the Pacific Northwest on RootsWeb.com Entries: 25958 Updated: Thu Oct 3 15:59:49 2002 Contact: Jim Weber jimweber@@nwintl.com
Note:
Information copied from Wayne Iverson, World Connect db=wiversrm, rootsweb.com
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Halfdan was half-brother of King Olaf the Saint and brother of King Harald who died in 1066 in a battle in England. When King Olaf asked him what he would like most to have, he said "cows". When asked how many he replied "So many that when they were watered they would stand thickly around the whole pond".
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Halfdan is not reference directly by Burke's Peerage, but is implied by them stating that his daughter Bergliot was a "niece of Harald III Hardradi of Norway", who is Halfdan's brother.