* Ariya finishes three strokes clear of the field
* Thai makes up for late major collapse in April
* World number one Ko finishes down the field (Adds details, quotes and byline)
WOBURN, England, July 31 (Reuters) - Ariya Jutanugarn banished the memories of a late collapse earlier this year as she became the first Thai golfer to win a major championship by taking the Ricoh Women's British Open title on Sunday.
The 20-year-old led by two strokes on the 70th tee at the ANA Inspiration in California in April but missed out on major glory when she dropped shots at each of the last three holes.