O Pioneers! is a 1913 novel by American author Willa Cather. It was written in part when Cather was living in Cherry Valley, New York, with Isabelle McClung and was completed at the McClungs' home in Pittsburgh.

Alexandra Bergson is the main character of the book. A strong-willed and intelligent woman. She was given the farm by her father John Bergson and after 16 years turned it into a very prosperous one. Alexandra isn't very adept at sensing peoples feelings or her own. It takes her a long time to realize that she loves Carl Linstrum. She also doesn't sense Emil's growing attraction toward the unhappily married Marie Shabata. She seems easy to forgive as well, as she claims to have no ill will against Frank, despite the fact he savagely murdered her brother...(wikipedia.org)