[1][2][3][4] At club level, he won a three-peat of Coupe Manier titles (1905–07), and was a three-time French champion in water polo (1905–06 and 1908), and even secretary of CA Paris.

[7] On 8 November 1903, Beau started in the final of the 1903–04 Coupe Manier in Vincennes, in which he made a "masterful" save from Georges Bayrou in an eventual 3–2 loss in extra-time to Gallia Club.

[5] The reasons for this sudden change remain unclear, but it was most likely related to the change of federations, since the LFA was a single-sport organization, dealing only with football, and not water polo, which meant that the CAP water polo section remained affiliated with the USFSA, of which Beau was the team captain, and even a international for the French national team.

[17] Two years later, on 30 March 1913, Coulon started in a Challenge International de Paris match against Red Star at the Charentonneau, which ended in a 3–1 loss.

[5] In 1903 and 1904, the USFSA selected him to play two unofficial matches between France and English club Corinthian, in which he conceded a total of 22 goals (0–11 and 4–11, respectively).

[5] Beau played his entire official international career as Coulon, but one does not have the right to take just any pseudonym because the law stipulates that a pseudonym must not be a pretext for appropriating the fame of a third party; however, there was a famous Henri Coulon [fr] at the time, a lawyer and a well-known painter, and on 23 March, while the footballer played a match widely reported by the newspapers against England, the lawyer-painter exhibited 75 paintings in a Parisian gallery.

[citation needed] Beau's playing style was quite particular for the time, close to that of a handball goalkeeper: He used his hands little, except to deflect the ball, never dived, and focused his game on positioning.

[20] Beau died in 14th arrondissement of Paris on 27 June 1928, at the age of 46,[2][3][5] from a long illness most likely caused by exposure to gas at the Battle of Verdun during the War.