claim: Pocahontas was Sioux.
evidence: The Piano Concerto in E-flat was John Ireland 's only concerto .. John Ireland. John Ireland ( composer ). It was composed in 1930 , and given its first performance on 2 October of that year by its dedicatee , Helen Perkin -LRB- 1909-1996 -RRB- , at a Promenade Concert in the Queen 's Hall .. Helen Perkin. Helen Perkin. Promenade Concert. The Proms. The work was an immediate success , and it was frequently performed by pianists such as Clifford Curzon , Moura Lympany , Eileen Joyce , Gina Bachauer and Arthur Rubinstein .. Clifford Curzon. Clifford Curzon. Moura Lympany. Moura Lympany. Eileen Joyce. Eileen Joyce. Gina Bachauer. Gina Bachauer. Arthur Rubinstein. Arthur Rubinstein. While it is considered one of the best piano concertos ever written by an Englishman , it is not often heard nowadays and is not part of the standard repertoire .. Encouraged by its success , Ireland planned to write a second concerto , but he only completed one movement , which he called Legend .. This was also dedicated to Helen Perkin , and she performed it for the first time on 12 January 1934 , with the BBC Symphony Orchestra conducted by Adrian Boult .. Helen Perkin. Helen Perkin. BBC Symphony Orchestra. BBC Symphony Orchestra. Adrian Boult. Adrian Boult. Ireland was romantically interested in Perkin , but these feelings were not reciprocated .. Perkin took up with George Mountford Adie , a disciple of George Gurdjieff , later marrying him and moving with him to Australia .. George Mountford Adie. George and Helen Adie. George Gurdjieff. George Gurdjieff. Australia. Australia. As a result , Ireland withdrew the dedications of both works .. Helen Perkin had played Prokofiev 's Piano Concerto No. 3 at the Royal College of Music , and it is likely Ireland heard this performance and was influenced by the Russian 's work .. Helen Perkin. Helen Perkin. Prokofiev. Sergei Prokofiev. Piano Concerto No. 3. Piano Concerto No. 3 ( Prokofiev ). Royal College of Music. Royal College of Music. He had not , however , heard Ravel 's G major Concerto since it did not appear until after Ireland 's concerto was published .. Ravel. Maurice Ravel. G major Concerto. Piano Concerto ( Ravel ). It is interesting , therefore , that many commentators see echoes in Ireland 's concerto not only of Prokofiev 's concerto , but also of Ravel 's .. Prokofiev. Sergei Prokofiev. Ravel. Maurice Ravel. In its jazzy rhythms , there are also hints of George Gershwin .. George Gershwin. George Gershwin. The first person to record the Piano Concerto in E-flat was Eileen Joyce , in 1942 , with the Halle Orchestra under Leslie Heward .. Eileen Joyce. Eileen Joyce. Halle Orchestra. The Halle. Leslie Heward. Leslie Heward. She was also the soloist when the concerto was played at a special Proms concert in 1949 to celebrate Ireland 's 70th birthday -LRB- this performance was also recorded , and released commercially -RRB- .. Proms concert. The Proms. After the concert , Eileen Joyce and her partner took Ireland to dinner , and Percy Grainger also attended .. Eileen Joyce. Eileen Joyce. Percy Grainger. Percy Grainger. The concerto was again played at Ireland 's 80th birthday concert .. It has also been recorded by Eric Parkin -LRB- twice -RRB- , Piers Lane , Kathryn Stott , Colin Horsley , Geoffrey Tozer , Mark Bebbington -LRB- as part of his complete John Ireland piano music edition -RRB- and John Lenehan .. John Ireland. John Ireland ( composer ). Eric Parkin. Eric Parkin. Piers Lane. Piers Lane. Kathryn Stott. Kathryn Stott. Colin Horsley. Colin Horsley. Geoffrey Tozer. Geoffrey Tozer. Mark Bebbington. Mark Bebbington. John Lenehan. John Lenehan. The Piano Concerto is in two formal movements ; the slow movement leads directly into the finale .. Towards the end of the slow movement Ireland quotes a melody from Helen Perkin 's String Quartet , with which she had earlier won the Royal College of Music 's Cobbett Prize for Composition .. Helen Perkin. Helen Perkin. Royal College of Music. Royal College of Music