Question: Svend Borbeng was the father of Claus von Bülow, who faced trial and retrial in the 1970s for what crime against his own wife?

Context paragraphs:
Maria Beccadelli di Bologna: Maria Beccadelli di Bologna, Marchesa di Altavilla, Principessa di Camporeale (born 6 February 1848, Naples - died 20 January 1929, Rome), married Princess Maria von Bülow, was the wife of Prince Bernhard von Bülow, the Chancellor of Germany.

Claus von Bülow: Claus von Bülow (born Claus Cecil Borberg; 11 August 1926) is a British socialite of German and Danish ancestry.  He was accused of the attempted murder of his wife Sunny von Bülow (born Martha Sharp Crawford, 1932–2008) in 1979 which had left her in a coma from which she later recovered but that conviction in the first trial was reversed and he was found not guilty at his second trial.  In the same trial he was also accused of the attempted murder of his wife by administering an insulin overdose in 1980 which left her in a persistent vegetative state for the rest of her life, but that conviction in the first trial was also reversed and he was found not guilty at his second trial.

Babette von Bülow: Clara Bertha Friederike von Bülow (née Clara Bertha Friederike Eberty; known as Babette von Bülow; September 30, 1850 – March 8, 1927) was a German writer of short stories, comedies and farces under the pen name Hans Arnold.  Born in Cieplice Śląskie-Zdrój, she was the daughter of the lawyer, writer and amateur astronomer Felix Eberty, professor at the University of Breslau and Mary Hasse.  She grew up in Breslau where she studied in a French school and married Lieutenant Colonel Adolf von Bülow on June 10, 1876.  The military career of her husband led them to live in different garrisons such as Hanover in 1893, Erfurt in 1896, Frankfurt Oder in 1900, Potsdam in 1902 and again from 1905 in Erfurt.  She personally knew Theodor Fontane.

Prince Alexander-Georg von Auersperg: Prince Alexander-Georg von Auersperg is the son of Sunny von Bülow and Prince Alfred von Auersperg, as well as the brother of Annie-Laurie von Auersperg and half-brother of Cosima von Bülow.

Reversal of Fortune: Reversal of Fortune is a 1990 film adapted from the 1985 book "Reversal of Fortune: Inside the von Bülow Case", written by law professor Alan Dershowitz.  It recounts the true story of the unexplained coma of socialite Sunny von Bülow, the subsequent attempted murder trial, and the eventual acquittal of her husband, Claus von Bülow, who had Dershowitz acting as his defense.  The film stars Jeremy Irons as Claus, Glenn Close as Sunny, and Ron Silver as Dershowitz.

Svend Borberg: Svend Borberg (April 8, 1888 – October 7, 1947) was a Danish author, playwright, editor and literary critic.  He was the brother of N. C. Borberg and William Borberg and the father of Claus von Bülow.

Cosima von Bülow Pavoncelli: Countess Cosima von Bülow Pavoncelli (born 15 April 1967) is a British socialite and philanthropist of American, Danish and German ancestry and daughter of the lawyer Claus von Bülow and Sunny von Bülow.  She was named on the International Best Dressed List Hall of Fame in 1999.

Wilhelm von Hahnke: Wilhelm Gustav Karl Bernhard von Hahnke (October 1, 1833 in Berlin – February 8, 1912) was a Prussian Field Marshal.  He was the son of later prussian Oberst Wilhelm von Hahnke (died 1861) and his wife Angelique, née von der Lancken (died 1873).  He married 1865 in Berlin Josephine von Bülow (1842–1911), daughter of Friedrich von Bülow (1789–1853).  The couple had seven sons and two daughters, among them:

Sunny von Bülow: Martha Sharp Crawford von Bülow, known as Sunny von Bülow (September 1, 1932 – December 6, 2008), was an American heiress and socialite.  Her husband, Claus von Bülow (b. 1926), was convicted of attempting her murder by insulin overdose, but the conviction was overturned on appeal.  A second trial found him not guilty, after experts opined that there was no insulin injection and that her symptoms were attributable to over-use of prescription drugs.  The story was dramatized in the book and movie, "Reversal of Fortune".  Sunny von Bülow lived almost 28 years in a persistent vegetative state until her death in a New York nursing home on December 6, 2008.

Eva Chamberlain: Eva Chamberlain (1867-1942) born Eva Maria von Bülow, was the illegitimate daughter of Richard Wagner and Cosima Wagner and the wife of Houston Stewart Chamberlain.  When she was born, her mother was still married to Hans von Bülow.  With her siblings Isolde and Siegfried, Eva was brought up by a house teacher.

Supporting paragraphs: Svend Borberg Claus von Bülow
Answer: attempted murder