Roberta Kaplan, the lawyer who represented Edith “Edie” Windsor at the Supreme Court, says she's amazed that her client got engaged two years before the 1969 Stonewall riots.

Kaplan appeared last week on C-SPAN's Book TV to promote her book Then Comes Marriage: United States v. Windsor and the Defeat of DOMA.

Windsor met her future wife, Thea Spyer, in the 1960s. Spyer died in 2009, two years after the women married in Canada. Windsor challenged the Defense of Marriage Act (DOMA), which prohibited the federal government from recognizing the women's marriage.

The 2013 Supreme Court ruling that struck down a key provision of DOMA is also credited with providing the legal framework for this year's landmark marriage equality ruling.

“Edie's life kind of tells a panoramic story of how life was for gay and lesbian people in this country in the 20th century,” Kaplan said.

Kaplan said that Windsor moved to New York after divorcing her husband to “be gay.”

Windsor met Spyer at a restaurant in Greenwich Village and said that it was love at first sight for her. Spyer proposed with a circular diamond pin instead of a ring to avoid suspicion.

“And that started an engagement that lasted 40 years. What's so incredible about that is it was 1967, two years before the Stonewall riots. So, the idea that in 1967 it would even occur to two women to get engaged, that they would have the self-esteem and the courage to even think those thoughts is incredible.”

Kaplan went on to describe the circumstances that led to Windsor hiring her.