Philanthropist and frequent Rockport visitor Doris Buffett will meet and speak with people about her new biography, “Giving it All Away: The Doris Buffett Story,” and sign copies Friday, Aug. 6 from 6 to 7:30 p.m. at the Owl & Turtle Bookshop, 32 Washington St.

Previously known mostly for being the big sister of investor Warren Buffett, Doris Buffett has come to the public’s attention for her numerous acts of philanthropy. In “Giving it All Away: The Doris Buffett Story,” author and journalist Michael Zitz tells of her often heartrending but ultimately inspiring story. Raised by an unstable, emotionally abusive mother and a frequently absent father, Buffett had a painful childhood that led to an adulthood that was no better — four disastrous marriages, bouts of depression, nearly losing her home and being estranged from her children.

It was not until her mother died in 1975 that Buffett found her niche in “retail philanthropy.” She has given away more than $100 million of her own money, in large part directly to individuals who write to her Sunshine Lady Foundation seeking funds for any number of reasons such as to afford a glass eye, start school or simply furnish a new bedroom for a child.

At 82, Buffet’s goal is to give away her entire fortune, which remains substantial despite her generosity and the stock market crash of 2008. She said that she wants the last check she writes to bounce due to “insufficient funds.”

VillageSoup Art/Entertainment Editor Dagney Ernest can be reached at 207-594-4401 or by e-mail to dernest@villagesoup.com.