Based on the engraved coat of arms and the date on the blade, the blade may have been ordered and purchased by Prince Aleksei Feodorovich Orlov (1786-1861) who enjoyed a distinguished military career and was a favourite of Alexander I. He was made a Count in 1825 and a Prince in 1856.
He took part of all the campaigns against Napoleon from 1805 to the capture of Paris.
Between 1819 and 1828, he was the commander of the Horse Guard Regiment and later became head of general staff headquarters and of the Emperor's secret service.
He appears to be the only Prince Orlov in one of the cuirassier regiments of the Guard at the time when the blade was ordered in Toledo in 1858.
The blade was probably remounted later, after the death of Prince A. F. Orlov, on a new sword by Schaff and Sons in St. Petersburg (after 1867, based on the Imperial warrant given to Schaff and Sons).