Question: Which French mathematician was born in Estagel which was where his father held the position of Treasurer of the Mint?

Context articles: Chief Medallist of the Royal Mint
1005 Arago
Anton von Schmerling
William Neville Hart
François Arago
Gaston Julia
William Cawthra
Henri Cartan
Treasurer of Queensland
Paul Balbach

Chief Medallist of the Royal Mint was a senior position at the British Royal Mint responsible for the overseeing of medal production.
 Historically the position was created in 1828 as a compromise to allow Italian engraver Benedetto Pistrucci to be more involved in the mint's engraving process without becoming the Mint's chief engraver.
 Being a foreign born Italian, appointment of Pistrucci to the prestigious role of Chief Engraver would have proved too scandalous and therefore despite performing the duties of chief engraver he was awarded the title of Chief Medallist.
 The role of Chief Engraver previously held by Thomas Wyon was awarded to his cousin William Wyon who along with Pistrucci were required to share the wages of both the Chief Engraver and second engraver, much to their disliking.
 In his role of Chief Medallist, Pistrucci was left feeling bitter at the injustice against him, producing little work of note apart from his Waterloo Medal.
1005 Arago, provisional designation 1923 OT, is a dark asteroid from the outer regions of the asteroid belt, approximately 55 kilometers in diameter.
 It was discovered on 5 September 1923, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula.
 The asteroid was named after French mathematician François Arago.
Anton Ritter von Schmerling (August 23, 1805 in Lichtental, ViennaMay 23, 1893 in Vienna), Austrian statesman, was born at Vienna, where his father held a high position on the judicial side of the civil service.
William Neville Hart (27 December 1741 in St James's Palace, London – 23 October 1804, Inveraray Castle, Scotland) was a British banker, politician and diplomat.
 He was born to Denise Gougeon, the wife of Lewis Augustus Blondeau.
 His mother was the Under Housekeeper or Mistress of the King's Household, a position she was to hold for more than fifty years.
 His father held various positions at Court including that of Gentleman Usher to King George II.
Arago was born at Estagel, a small village of 3,000 near Perpignan, in the "département " of Pyrénées-Orientales, France, where his father held the position of Treasurer of the Mint.
Gaston Maurice Julia (3 February 1893 – 19 March 1978) was a French mathematician who devised the formula for the Julia set.
 His works were popularized by French mathematician Benoit Mandelbrot; the Julia and Mandelbrot fractals are closely related.
William Cawthra (29 October 1801 – 26 October 1880) was a philanthropist, business and civic leader and the eldest son of Joseph Cawthra.
 William, like his father, was associated with reformists and was considered anti-establishment, notwithstanding his wealth.
 William was elected to Toronto City Council as the Alderman for St. Lawrence Ward in 1836, a position his father held for one year until he was unseated in 1835 by conservative opposition.
Henri Paul Cartan (] ; July 8, 1904 – August 13, 2008) was a French mathematician with substantial contributions in algebraic topology.
 He was the son of the French mathematician Élie Cartan and the brother of composer Jean Cartan.
The Treasurer of Queensland, previously styled Colonial Treasurer of Queensland, is the title held by the Cabinet minister who is responsible for the financial management of Queensland Government in Australia.
 The public service department who operate under the direction of the Treasurer is known as the Queensland Treasury.
 In 1996, Joan Sheldon became the first woman to hold the role of Treasurer in Queensland.
 A decade later in 2006, a second woman, Anna Bligh held the role, however as indicated below, the position is overwhelmingly held by men.
 The department is occupying new offices at 1 William Street in the Brisbane central business district.
Paul Balbach (born September 29, 1953 in Brazil) was the Corporate Secretary for the Seventh Day Adventist Reform Movement, 2007-2011.
 His father, Alfons Balbach, held the same office from 1963-1967 and again from 1971-1980.
 Paul also held the position of Publishing Department Director, again a post which his father held from 1971 to 1991.
 Prior to this Paul worked for the city of Fontana, California, as well as being President of the SDARM Southwest United States Field.