Alard married the daughter of Vuillaume, one of the best violin makers of France, and through him became the owner of one of the most beautiful Stradivarius violins.  Alard died in Paris, February 22, 1881.

Hubert Leonard was born at Bellaire, near Liege, in 1819, but unlike the majority of violinists he did not appear in concerts at an early age, nor did he enter the Paris Conservatoire until he was seventeen.  At this time the wife of a wealthy merchant in Brussels took interest in him and provided the means necessary for him to go to Paris.  In 1844 he appeared at Leipzig, and created a deep impression by the beauty of his tone and his elegant performance.  He travelled through Europe and played chiefly his own compositions, of which there are a great many, but his greatest fame was earned after he was appointed professor at the Brussels Conservatoire, where he had many pupils, of whom the most celebrated is, perhaps, Martin Marsick.

Concerning the merits of Heinrich Wilhelm Ernst there seems to be a wide difference of opinion between various commentators.  He was a man of warm, impulsive nature, whose playing was distinguished by great boldness in the execution of technical difficulties of the most hazardous nature.  His tone had a peculiar charm, and at the same time his fiery, impetuous nature and uneven disposition led to certain occasional errors in technique and faulty intonation.  Nevertheless, he was one of the most welcome performers in the concert halls of Europe for a number of years.  He was a thorough musician and a good composer, though his works are so full of technical difficulties as to be almost impossible of performance.  Indeed it is said that some of them contained difficulties which even he could not always overcome.

Born in Moravia at the town of Bruenn in 1814, he entered the Vienna conservatory, and in 1830 made his first concert tour through Munich and Paris.  Paganini was at that time travelling in Europe, and Ernst, in the desire to learn something from this great artist, followed him from town to town, and endeavoured to model his own playing upon the style of the Italian virtuoso, an effort which seems to have brought down upon him the censure of some critics, but which others have considered highly praiseworthy.

In 1832 he settled in Paris, where he studied hard under De Beriot, and played in concerts frequently.  After 1844 he lived chiefly in England, where he was highly appreciated, until the approach of his fatal disease made it necessary for him to give up, first, public performances, and then violin playing of any kind.  He died at Nice after eight years of intense suffering, in 1865.