question: What is the place of birth of Jehu Grubb's father?
context: [["Steve Grubb", ["Steve Grubb( born 19 September 1968) is a retired English professional darts player who played for the Professional Darts Corporation events, he was nicknamed Grubby."]], ["Curtis Grubb", ["Curtis Grubb (17301789), Patriot and oldest son of Peter and Martha Bates Grubb, was a second-generation member of the Grubb Family Iron Dynasty along with his younger brother", "Peter Jr. The brothers operated the Cornwall Ironworks, making significant contributions to the American Revolutionary War effort, and Curtis served several terms in the Pennsylvania Provincial Assembly.", "The brothers inherited the ironworks from their father in 1754, with Curtis (the oldest) receiving a two-thirds interest and Peter one-third.", "The brothers took over operation of the ironworks about 1765 and expanded it successfully.", "Curtis operated the Cornwall Furnace that produced pig iron, and Peter, who had more ironmaking experience, ran the nearby Hopewell Forges on Hammer Creek that produced more valuable bar iron.", "In 1773, Curtis paid taxes on at the furnace location and Peter paid taxes on at the forges location, reflecting both the size of the operation and their proportional ownership.", "They operated the business through and after the Revolution, becoming quite prosperous until they died, Peter in 1786 and Curtis in 1789.", "Most of the Cornwall ironworks fell out of family hands during the period 1783 - 1802, to Robert Coleman who became Pennsylvania's first millionaire.", "But a portion, including rights to access the ore, remained with Peter Jr.'s heirs, who added to it to become major Pennsylvania producers of iron in the mid-19th century, operating out of Mount Hope Estate."]], ["Obata Toramori", ["He was the father of Obata Masamori."]], ["John Templeton (botanist)", ["John Templeton( 1766\u20131825) was an early Irish naturalist and botanist.", "He is often referred to as the\" Father of Irish Botany\".", "He was the father of naturalist, artist and entomologist Robert Templeton."]], ["Jehu Grubb", ["Jehu Grubb (a.k.a. John Grubb) (c. 1781 \u2013 1854), unacknowledged son of the prominent ironmaster Curtis Grubb, was an early settler who became a leading citizen in Plain Township, Stark County, Ohio.", "Grubb served in the War of 1812, was a justice of the peace, served in the Ohio House of Representatives in 1828 and 1832, and in 1852 donated land for the Whitehall School.", "Grubb was often called John in various documents, and seems to have used both names himself.", "His stepson built the beautiful and historic Jacob H. Bair House on what been a corner of Grubb's farm."]], ["Cleomenes II", ["Cleomenes II( died 309 BC) was Agiad King of Sparta from 369 to 309 BC.", "The son of Cleombrotus I, he succeeded his brother Agesipolis II.", "He was the father of Acrotatus I, the father of Areus I, and of Cleonymus, the father of Leonidas II."]], ["Dayle Grubb", ["Dayle Grubb( born 24 July 1991) is an English professional footballer who plays as a central midfielder for League Two club Forest Green Rovers."]], ["Arthur Beauchamp", ["Arthur Beauchamp( 1827 \u2013 28 April 1910) was a Member of Parliament from New Zealand.", "He is remembered as the father of Harold Beauchamp, who rose to fame as chairman of the Bank of New Zealand and was the father of writer Katherine Mansfield."]], ["Jennifer Grubb", ["Jennifer Leigh\" Jen\" Grubb( born July 20, 1978) is an American former women's soccer player."]], ["Trent Grubb", ["Trent Grubb( born 22 March 1989) is a rugby league footballer who played for Cronulla- Sutherland Sharks in the National Rugby League.", "His choice of position is second row."]]]
supporting_facts: [["Jehu Grubb", 0], ["Curtis Grubb", 1]]
evidences: [["Jehu Grubb", "father", "Curtis Grubb"], ["Curtis Grubb", "place of birth", "Pennsylvania"]]
answer: Pennsylvania