Blood brother  Blood brother can refer to one of two things: two
males related by birth, or two or more men not related by birth,
who swear loyalty to one another. This is usually done in a
ceremony, known as a Blood Oath, where the blood of each man is
mingled together. In simple terms, this is an extension of
fraternization.  Orvar-Odd's saga contains a notable account of
blood brotherhood. The Norwegian warrior Orvar-Odd felt a desire
to test his fighting skills with the renowned Swedish warrior
Hjalmar. Thus Orvar-Odd sailed to Sweden with five ships and met
Hjalmar who had fifteen ships. Hjalmar could not accept such an
uneven balance of strength and sent away ten of his own ships so
that the forces would be even. The two warriors fought for two
days with a lot of blood-letting and poetry, but it was a draw.
Finally, they realized that they were equals and decided to
become sworn brothers by letting their blood flow under a strand
of turf raised by a spear. Then the strand of turf was put back
during oat