There was originally no information about Private Byrne in the EJBA. When he started researching the field, James Boys included only those men he knew from records had actually arrived in the Crimea. He later accepted that this was too restrictive, but was unable to add all the men who embarked for but did not reach the Crimea. Many, for example, died en route at Varna, Bulgaria, where epidemic diseases such as cholera were rife in the camps. The current editors are intending to include these men, and will be adding information as soon as possible.
See also the record of his namesake in the regiment, 1029, John Byrne or Byrnes, 8th Hussars.
Further info in Crider, 3rd Edition, p136.
The muster rolls show that 925 John Byrne died at Yenibazar, Bulgaria, on the 16th of August 1854.