Question: What was the nationality of the composer who dedicated two of his nocturnes to Jane Stirling?

Context articles: Frédéric Chopin
Nocturnes, Op. 15 (Chopin)
Nocturnes (Debussy)
Nocturnes (Field)
Nocturnes, Op. 48 (Chopin)
Nocturnes, Op. 9 (Chopin)
Jane Stirling
Nocturnes, Op. 27 (Chopin)
Nocturnes, Op. 32 (Chopin)
Nocturnes, Op. 55 (Chopin)

Frédéric François Chopin ( ; ] ; born Fryderyk Franciszek Chopin, 1 March 181017 October 1849) was a Polish composer and virtuoso pianist of the Romantic era who wrote primarily for the solo piano.
 He gained and has maintained renown worldwide as a leading musician of his era, whose "poetic genius was based on a professional technique that was without equal in his generation."
 Chopin was born in what was then the Duchy of Warsaw and grew up in Warsaw, which in 1815 became part of Congress Poland.
 A child prodigy, he completed his musical education and composed his earlier works in Warsaw before leaving Poland at the age of 20, less than a month before the outbreak of the November 1830 Uprising.
The Nocturnes, Op. 15 are a set of three nocturnes written by Frédéric Chopin between 1830 and 1833.
 The work was published in January 1834, and was dedicated to Ferdinand Hiller.
Nocturnes (L. 91), sometimes Trois Nocturnes or Three Nocturnes, is an orchestral composition in three movements by the French composer Claude Debussy.
 It was completed on 15 December 1899.
Irish composer John Field's Nocturnes (1782–1837) for piano are known for being the first nocturnes ever written.
 The work consists of 16 separate nocturnes.
The Nocturnes, Op. 48 are a set of two nocturnes written by Frédéric Chopin in 1841 and published the following year in 1842.
 They are the only two nocturnes in opus 48 and are dedicated to Mlle. Laure Duperré.
 Chopin later sold the copyright for the nocturnes for 2,000 francs along with several other pieces.
The Nocturnes, Op. 9 are a set of three nocturnes written by Frédéric Chopin between 1830 and 1832, published that year, and dedicated to Madame Camille Pleyel.
 The second nocturne of the work is regarded as Chopin's most famous piece.
Jane Wilhelmina Stirling (15 July 1804 – 6 February 1859) was a Scottish amateur pianist who is best known as a student and later friend of Frédéric Chopin; two of his nocturnes are dedicated to her.
 She took him on a tour of England and Scotland in 1848, and took charge of the disposal of his effects and manuscripts after his death in 1849.
 While there is no evidence they were lovers, she was often referred to, after Chopin's death, as "Chopin's widow".
The Nocturnes, Op. 27 are two solo piano pieces composed by Frédéric Chopin.
 The pieces were composed in 1836 and published in 1837.
 Both nocturnes in this opus are dedicated to Countess d'Appony.
The Nocturnes, Op. 32 are a suite of two nocturnes written and published by Frédéric Chopin in 1837.
 The nocturnes are dedicated to Madame Camile de Billing, and were his 9th and 10th nocturnes published.
The two Nocturnes, Op. 55 by Frédéric Chopin, the fifteenth and sixteenth of his nocturnes, were composed between 1842 and 1844, and published in August 1844.
 Chopin dedicated them to his pupil Jane Stirling.