Question: Who was the neice of the "Camptown Races" writer, who also wrote a biography about him?

Cynthia Carr is a writer and cultural critic who works in New York City.  She often publishes under the byline C. Carr.  In the 1980s and 1990s she had various roles, including staff writer for "The Village Voice".  She also wrote about performance art and culture for "ArtForum", "LA Weekly", "Interview" and "Mirabella".  Her biography of artist and AIDS activist David Wojnarowicz, "Fire in the Belly", was published by Bloomsbury on July 17, 2012 and was named by Dwight Garner in "The New York Times" as one of his ten favorite books of the year.  The book won a Lambda Literary Award in 2013 in the category of Gay Memoir or Biography. <SEP> Stephen Collins Foster (July 4, 1826January 13, 1864), known as "the father of American music", was an American songwriter known primarily for his parlor and minstrel music.  Foster wrote over 200 songs; among his best-known are "Oh!  Many of his compositions remain popular more than 150 years after he wrote them.  His compositions are thought to be autobiographical.  He has been identified as "the most famous songwriter of the nineteenth century" and may be the most recognizable American composer in other countries.  His compositions are sometimes referred to as "childhood songs" because they have been included in the music curriculum of early education.  Susanna", "Hard Times Come Again No More", "Camptown Races", "Old Folks at Home" ("Suwanee River"), "My Old Kentucky Home", "Jeanie with the Light Brown Hair", "Old Black Joe", and "Beautiful Dreamer".  Most of his handwritten music manuscripts are lost, but copies printed by publishers of his day can be found in various collections. <SEP> Morrison Foster (June 10, 1823May 14, 1904) was the older brother, business agent and biographer for Stephen Foster, a composer and lyricist of early American music.  Morrison's daughter Evelyn Foster Mornewek, wrote an biography about her uncle, "Chronicles of Stephen Foster's Family."  When Stephen Foster died at age 37, Morrison continued to manage Stephen's estate and acted as a mediator between music publishers and Stephen Foster's wife and daughter.  Documents demonstrate his correspondence with publishers in his receipt of royalty payments on behalf of Stephen's heirs.  Morrison also wrote the first biography of Stephen Foster. <SEP> Harry Winkler was an American sitcom writer who wrote for such shows as "The Addams Family", "The George Gobel Show", and others.  He shared an Emmy award in 1955 for "The George Gobel Show" and was nominated the following year for the same show.  In that same year, 1956, one of his television scripts was featured in "The Prize Plays of Television and Radio 1956" published by Random House.  Mr. Winkler also wrote the ground breaking series "Julia" starring Dianne Carroll, the first commercial television series to star an African-American female in the lead role of a single, professional woman with a family to support.  He also wrote the original treatment "The Flagstones" for what ultimately became known as "The Flintstones".  Additional credits include having been the ghost writer for the internationally featured Blondie comic strip series for over 25 years, 1955 through 1980.  He also wrote for a wide variety of other comedy series ranging from Petticoat Junction, to the Brady Bunch, to the Odd Couple.  In 2014 he received a posthumous award from the Writers Guild of America for his work on the Odd Couple television series, that script having been designated one of the top 100 television screenplays during the first 75 years of commercial television.  He is also the author of three novels and a theatrical play, "Edges".