when did he become a saint?
Olaf swiftly became Norway's patron saint; Bishop Grimkell performed his canonisation only a year after his death.
Olaf II of Norway
Olaf swiftly became Norway's patron saint; Bishop Grimkell performed his canonisation only a year after his death. 
where did the song london bridge is falling down come from England does it has adapted into any game? Yes, the rhyme is often used in a children's singing game, which exists in a wide variety of forms, with additional verses. is this poem relates any attack or war? Yes, one hypothesis of origin is that the rhyme relates to the supposed destruction of London Bridge by Olaf II of Norway can you give some details of the person mentioned above? He was King of Norway how long did he rule? From 1015 to 1028 where was he born? Ringerike
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Olaf II of Norway [SEP] Sainthood
Olaf swiftly became Norway's patron saint; Bishop Grimkell performed his canonisation only a year after his death. The cult of Olaf unified the country and consolidated the christianisation of Norway. He is also recognized as the patron saint of the Faroe Islands. Owing to Olaf's later status as Norway's patron saint, and to his importance in later medieval historiography and in Norwegian folklore, it is difficult to assess the historical Olaf's character. Judging from the bare outlines of known historical facts, he appears to have been a fairly unsuccessful ruler, whose power was based on an alliance with the much more powerful King Cnut the Great; who was driven into exile when he claimed power of his own; and whose attempt at a reconquest was swiftly crushed.