Did the three wise men start Christmas?

Did the three wise men go and see Jesus? Yes

St Matthew 2:11

"And when they were come into the house, they saw the young child with Mary his mother, and fell down, and worshipped him: and when they had opened their treasures, they presented unto him gifts; gold, and frankincense, and myrrh.

In fact, The Bible doesn't refer to "Three Wise Men"; only "Wise Men" - so it only says more than one wise man visited Jesus: St Matthew 2:1 Now when Jesus was born in Bethlehem of Judaea in the days of Herod the king, behold, there came wise men from the east to Jerusalem,