Margaret Carnegie Miller (March 30, 1897 – April 11, 1990) was the only child of industrialist and philanthropist Andrew Carnegie and heiress to the Carnegie fortune.

Biography

Margaret Cameron Carnegie was born March 30, 1897 in New York City to Carnegie and Louise Whitfield, whom Carnegie married when he was 51 years old.

Margaret Carnegie married Roswell Miller, Jr., at the Carnegie family home at 2 East 91st Street in New York on April 22, 1919 where she was given away by her father just four months before his death. Officiating at the wedding were Rev. William Pierson Merril, pastor of the Brick Presbyterian Church (New York City), where Margaret and Mrs. Carnegie were members, and Rev. Henry Sloane Coffin, pastor of the Madison Avenue Presbyterian Church where Mr. Carnegie was a member.

From 1934 to 1973 Margaret was a trustee of the Carnegie Corporation of New York, a grant-making foundation. The foundation was established by her father in 1911. From 1973 until her death she was an honorary lifetime trustee.

Margaret Carnegie's marriage to Roswell Miller ended in divorce. Miller had four children (Louise, Roswell III, Barbara, and Margaret). She died on April 11, 1990, at her home in Fairfield, Connecticut, at the age of 93.