Question: Who was the President who owned both James Heming and Sarah "Sally" Hemings?
Context: Sarah "Sally" Hemings ( 1773 – 1835) was an enslaved woman of mixed race owned by President Thomas Jefferson.  Most historians believe Jefferson was the father of her six children, born after the death of his wife, Martha Jefferson.  Four survived to adulthood, and were given freedom by Jefferson.  Hemings was the youngest of six siblings by the widowed planter John Wayles and a mixed-race woman he kept as a slave, Betty Hemings; Sally and her siblings were three-quarters European and half-siblings of Jefferson's wife, Martha Wayles Skelton.  As an infant Sally came to Monticello as part of Martha's inheritance of her father's slave holdings. John Wayles Jefferson, born John Wayles Hemings (May 8, 1835 – July 12, 1892), was a successful businessman before and after the American Civil War, in which he served in the Union Army and was promoted to the rank of colonel.  Jefferson owned a successful hotel in Madison, Wisconsin, in the 1850s; after the Civil War he moved to Memphis, Tennessee, where he achieved wealth as a cotton broker.  Jefferson is believed to be a grandson of Thomas Jefferson, third President of the United States; his paternal grandmother was Sarah (Sally) Hemings, the president's mixed-race slave and half-sister to his late wife. Harriet Hemings (May 1801 – 1870) was born into slavery at Monticello, the home of Thomas Jefferson, third President of the United States, in the first year of his presidency.  Most historians believe her father is Jefferson, who is believed by many historians to have fathered with his concubine Sally Hemings four children who survived to adulthood. From the Diary of Sally Hemings is a song cycle for voice and piano.  The work, commissioned by mezzo-soprano Florence Quivar and Music Accord, is a collaboration between Pulitzer Prize winning composer William Bolcom and playwright Sandra Seaton.  After being contacted by Quivar, Bolcom asked Seaton to write entries for a fictional diary kept by Sally Hemings throughout her life.  Seaton's text for 18 entries of the imaginary diary were then set to music by Bolcom. Eston Hemings Jefferson (May 21, 1808 – January 3, 1856) was born a slave at Monticello, the youngest son of Sally Hemings, a mixed-race slave.  Most historians who have considered the question believe that his father was Thomas Jefferson, the United States president.  Evidence from a 1998 DNA test showed that a descendant of Eston matched the Jefferson male line, and historical evidence also supports the conclusion that Thomas Jefferson was probably Eston's father.  Many historians believe that Jefferson had a relationship with Sally Hemings and fathered her six children, four of whom survived to adulthood. James Hemings (1765–1801) was an American mixed-race slave owned and freed by Thomas Jefferson.  He was an older brother of Sally Hemings and a half-sibling of Jefferson's wife Martha Wayles Skelton Jefferson because their father was John Wayles.  As a young man, Hemings was selected by Jefferson to accompany him to Paris when the latter was appointed Minister to France.  There Hemings was trained to be a French chef; independently, he took lessons to learn to speak the French language. Elizabeth "Betty" Hemings ( 1735 – 1807) was an enslaved mixed-race woman in colonial Virginia.  She had six children with her master, planter John Wayles, over a 12-year period, including Sally Hemings; they were three-quarters white and, following the condition of their mother, all were enslaved from birth and half-siblings to his daughter Martha Jefferson.  After Wayles died, the Hemings family and some 120 other slaves were inherited, along with 11,000 acres and £4,000 debt as part of his estate by his daughter Martha and her husband Thomas Jefferson. Tina Yvonne Andrews (born April 23, 1951) is an American actress, television producer, screenwriter, author and playwright.  She is known for writing the TV mini-series, "Sally Hemings: An American Scandal" (2000), which was the first time that the Jefferson-Hemings relationship had been explored on TV, and with Hemings portrayed as a fully realized woman.  In 2001, Andrews was the first African American to win the Writers Guild of America award for Original Long Form, for her script for this mini-series.  Andrews had earlier explored her interest in Hemings with a play, "The Mistress of Monticello", which was read at a workshop in Chicago in 1985. The Jefferson–Hemings controversy is a historical debate over whether a sexual relationship between U.S. President Thomas Jefferson and his slave, Sally Hemings resulted in his fathering some or all of her six recorded children.  For more than 150 years, most historians denied rumors from Jefferson's presidency that he had a slave concubine.  Based on his grandson's report, they said that one of his nephews had been the father of Hemings' children.  Before changing his mind following the results of DNA analysis in 1998, Jefferson biographer Joseph J. Ellis had said, "The alleged liaison between Thomas Jefferson and Sally Hemings may be described as the longest-running miniseries in American history." Madison Hemings, born James Madison Hemings (18 January 1805 – 28 November 1877), was the son of the mixed-race slave Sally Hemings; he was the third of four children to survive to adulthood.  Madison Hemings grew up on Jefferson's Monticello estate.  Born into slavery by his mother's status, he was freed by the will of his master Thomas Jefferson in 1826.  Based on historical and DNA evidence, historians widely agree that Jefferson was probably the father of all Hemings's children.  At the age of 68, Madison Hemings claimed the connection in an 1873 Ohio newspaper interview, titled, "Life Among the Lowly," which attracted national and international attention.  1998 DNA tests demonstrate a match between the Y-chromosome of a descendant of his brother, Eston Hemings Jefferson, and that of the male Jefferson line.  Some historians continue to debate the issue.
Answer: President Thomas Jefferson