Being a minor when he succeeded, he was cared for by two guardians, Sir Frederick Gustavus Fowke, Bt., of Lowesby Hall in the County of Leicestershire, and his cousin Henry Gally Knight of Langold.
She died on 2 December 1825, aged 18, and was buried in the White family vault at the Church of St Nicholas, Tuxford.
White's first military commission was as an Ensign in the 3rd (Retford) Regiment, Nottinghamshire Local Militia, commanded by his father.
When White was in the 3rd Light Dragoons, the Duke of York, who was at that time the Commander-in-Chief, came to inspect the regiment at Brighton, while it was on its Sunday church parade.
In 1838, after the annual 8 days of permanent drill at Newark, the Sherwood Rangers were ordered to Mansfield in preparation for the expected uprising of the Chartists.
White sent regular reports, using the information he had gathered about the movements and state of the Chartists, to the Home Secretary, Lord John Russell.
A letter of thanks was received back from Lord John, saying the account of the intentions of the Chartists, etc., which White had given him, was the most correct in every particular of any that had been supplied to the Home Office.
During the 1840 election in Newark, the Sherwood Rangers were again called out, with White at their head, having been asked for his advice as what to do by the magistrates of the town.
The rioters were not expecting such a response and consequently were afraid to touch him; meaning he could cross the bridge and achieve his mission of calling out the troops.
They were dressed in the green and silver livery of his seat, Wallingwells, and the trumpeters had silk banners showing his achievement-of-arms of 28 quarterings.
It is said that on one occasion when White was waiting for a judge in his coach, two old farmers came up to it, peered in through the window and eventually uttered, "Nay, he is not half so good-looking as his father were when he was Sheriff!"