Beverly B. Brownstein, 75, of Bala Cynwyd, who helped her husband build an ad agency and later ran her own businesses, died Monday, May 13, at home after battling breast cancer for several years.

Born in South Philadelphia, Mrs. Brownstein was 19 when she married her future husband, Berny, who was 21. They began their lives together in Mount Airy and then moved to Cheltenham, where they raised three children.

Mrs. Brownstein initially helped her husband manage the Brownstein Group, an ad agency he founded and now runs with their son, Marc. But her business savvy led her to launch her own small, home-based enterprises, including a line of lingerie and a chocolate cake that she sold to some of Philadelphia's top restaurants.

She also "had a ball" writing a gossip column, "Bev's Line," for the Main Line Jewish Expression newspaper, which was later sold to the Jewish Exponent, her son Marc said.

In 1997, Mrs. Brownstein and her husband moved to Bala Cynwyd, where she often hosted family and friends. She was also an avid tennis player, board-game aficionado, and stock-market investor.

In addition to her husband and son, she is survived by another son, Michael; a daughter, Toni; a sister and two brothers; and six grandchildren.

A memorial service was to be held Sunday, May 19, at Congregation Rodeph Shalom in Philadelphia.

Donations in Mrs. Brownstein's name may be made to the American Association for Cancer Research, 615 Chestnut St., 17th Floor, Philadelphia 19106, or through its website at www.aacr.org.

Contact Marie McCullough at 215-854-2720 or mmccullough@phillynews.com.