Question: Who is Harriet Hemings's maternal grandfather?

Knowledge 1: Harriet Hemings
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 was Jefferson, who is now believed to have fathered, with his slave Sally Hemings, four children who survived to adulthood.While Jefferson did not legally free Harriet, in 1822 when she was 21, he aided her "escape".He saw that she was put in a stage coach and given $50 for her journey.Her brother Madison Hemings later said she had gone to Washington, DC, to join their older brother Beverley Hemings, who had similarly left Monticello earlier that year.Both entered into white society and married white partners of good circumstances.While seven-eighths European in ancestry, all the Hemings children were legally slaves under Virginia law at the time, in accordance of which they inherited the status of their enslaved mother, who was three-quarters European in ancestry.Jefferson freed the two youngest brothers in his will of 1826, so they were legally free.Beverly and Harriet stayed in touch with their brother Madison Hemings for some time, and then Harriet stopped writing. [SEP] Knowledge 2: Sally Hemings
Sarah "Sally" Hemings (1773–1835) was an enslaved woman of mixed race owned by President Thomas Jefferson.According to the "New York Times", there is a "growing historical consensus" among scholars that, as a widower, Jefferson had a long-term relationship with Hemings, and that he was the father of her six children, born after the death of his wife Martha Jefferson, who was the half-sister of Sally Hemings.Four of Hemings' children survived to adulthood.Hemings died in Charlottesville, Virginia, in 1835.Sally Hemings came to Jefferson's home as an infant with her siblings and her mother, Betty, as part of his wifeMartha's inheritance of slaves from her father, John Wayles.Hemings was the youngest of six children that Betty Hemings is believed to have had with Wayles.If true, she was three-quarters European and a half-sister of Martha Jefferson.In 1787, Hemings, aged 14, accompanied Jefferson's youngest daughter Mary "Polly" to London and then to Paris, where the widowed Jefferson, aged 44 at the time, was serving as the United States Minister to France.Hemings spent two years there.Most historians believe Jefferson began using Sally Hemings for sex in France or soon after their return to Monticello.Despite this, Hemings remained enslaved in Jefferson's house until his death.In 2017, a room identified as her quarters at Monticello, under the south terrace, was discovered in an archeological restoration.It is being restored and refurbished.The historical question of whether Jefferson was the father of Hemings' children is the subject of the Jefferson–Hemings controversy.Following renewed historic analysis in the late 20th century and a 1998 DNA study that found a match between the Jefferson male line and a descendant of Hemings' last son, Eston Hemings, the Monticello Foundation asserted that Jefferson fathered Eston and perhaps all five of her children.However, there are some who disagree.In 2018, the Thomas Jefferson Foundation of Monticello announced its plans to have an exhibit on the "Life of Sally Hemings" and affirmed that it was treating as a settled issue that Jefferson was the father of her known six children.The exhibit opened in June 2018.Hemings' children lived in Jefferson's house as slaves and were trained as artisans.Jefferson freed all of Hemings' surviving children: Beverly, Harriet, Madison, and Eston, as they came of age; they were the only slave family freed by Jefferson.They were seven-eighths European in ancestry, and three of the four entered white society as adults.Descendants of those three identified as white.After Jefferson's death, Hemings was "given her time" by his daughter in an informal freedom.She lived her last nine years freely with her two younger sons in Charlottesville, Virginia.She saw a grandchild born in the house her sons owned.
Knowledge 1: Harriet Hemings
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 was Jefferson, who is now believed to have fathered, with his slave Sally Hemings, four children who survived to adulthood.While Jefferson did not legally free Harriet, in 1822 when she was 21, he aided her "escape".He saw that she was put in a stage coach and given $50 for her journey.Her brother Madison Hemings later said she had gone to Washington, DC, to join their older brother Beverley Hemings, who had similarly left Monticello earlier that year.Both entered into white society and married white partners of good circumstances.While seven-eighths European in ancestry, all the Hemings children were legally slaves under Virginia law at the time, in accordance of which they inherited the status of their enslaved mother, who was three-quarters European in ancestry.Jefferson freed the two youngest brothers in his will of 1826, so they were legally free.Beverly and Harriet stayed in touch with their brother Madison Hemings for some time, and then Harriet stopped writing. [SEP] Knowledge 2: Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.He was the grandfather of Emperor Yōzei.
Knowledge 1: Harriet Hemings
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 was Jefferson, who is now believed to have fathered, with his slave Sally Hemings, four children who survived to adulthood.While Jefferson did not legally free Harriet, in 1822 when she was 21, he aided her "escape".He saw that she was put in a stage coach and given $50 for her journey.Her brother Madison Hemings later said she had gone to Washington, DC, to join their older brother Beverley Hemings, who had similarly left Monticello earlier that year.Both entered into white society and married white partners of good circumstances.While seven-eighths European in ancestry, all the Hemings children were legally slaves under Virginia law at the time, in accordance of which they inherited the status of their enslaved mother, who was three-quarters European in ancestry.Jefferson freed the two youngest brothers in his will of 1826, so they were legally free.Beverly and Harriet stayed in touch with their brother Madison Hemings for some time, and then Harriet stopped writing. [SEP] Knowledge 2: Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.

Answer: John Wayles