My gggrandfather was William Bentley who was saved from death by Lt Dun
Wow! you must be very proud of him!
I can fill in some of the gaps regarding the movements of the 11th Dragoons/Hussars.
In 1837 the regiment was in Cawnpore in having served in India for 18 years.In December 1837 they left Cawnpore and India via Calcutta where the regiment was put aboard two ships, the Repulse and the Thames.The 200 men aboard the Thames had a terrible 700 mile journey due to there being no proper accomodation and a total lack of any hammocks or bedding!
When they arrived back in England they were posted via Chichester to Canterbury where they remained until 1840 when they were moved to Preston Barracks in Brighton,half of the regiment were quartered at the Royal Pavillions.It was at this time that the name of the regiment was changed from the 11th Light Dragoons to the 11th (Prince Albert's Own) Hussars on account of their having escorted Prince Albert of Saxe-Coburg on his arrival in England on his way to marry Queen Victoria.
The regiment left Brighton on the 22nd March 1841 and were ordered to do 'Queen's Duty' providing escorts for Royal journeys and visits, they were quartered at Hounslow Barracks with a detatchments of the regiment at Hampton Court, Kensington and the Royal Military College at Sandhurst.In the summer of 1841 they escorted the Queen to Nuneham, Woolwich and Woburn.
In April 1842 they were sent to York due to the threat of civil unrest by the Chartists and by August 1842 there were detatchments of the regiment in Halifax, Rochdale and Glossop where their duties included escorting Chartist prisoners to and from Goal to court.
On the 25th April 1843, and due to the troubles in Ireland, they left York and travelled to Dublin via Liverpool.In Dublin they were quartered at the Royal Barracks near Pheonix Park.
Returning from Ireland in May 1846, they spent the next two years at Coventry with a detatchment at Manchester.
From 1848 to 1850 they were back at Hounslow escorting the Queen, and in 1850 they went to Norwich where they stayed until 1852 when they returned once again to Dublin and that's where they were when war was declared in the Crimea.
Hope this helps,
Mick