Violin Sonata No. 8

The Violin Sonata No. 8 in G major, Op. 30 No. 3 by Ludwig van Beethoven, the third of his Opus 30 set, was written between 1801 and 1802, published in May 1803, and dedicated to Tsar Alexander I of Russia. - Wiki

на самом деле все три сонаты ему посвящены: Beethoven – 3 Sonatas, for Piano and Violin, Op. 30:

The new Tsar was lionized in Vienna, and in 1802, always quick to seize the opportunity to make a political advantage, Beethoven requested permission to dedicate the three new Sonatas to him. Alexander supposedly sent a diamond ring in appreciation, and in advance of the promised commission. However, the Tsar left Vienna without paying Beethoven for the works, which debt still remained unpaid when he returned for the Vienna Congress in 1814, where he met Beethoven again.

забавная история, там есть продолжение, в конце концов ему заплатили положенные 150 дукатов