[22] The Commanding Royal Engineer, Sir Richard Fletcher, was killed in the final assault of the fortress on 31 August; thereafter the siege was conducted by Lieutenant Colonel John Fox Burgoyne, RE, who was severely wounded in that effort which ended on 8 September 1813.

[24][2]: 20 In May 1815, Bolton was lodged at Ghent, where Louis XVIII resided after quitting Paris in March, but as his superior had left without passing on instructions, he and his fellow engineers had little to do.

[27] Under Lieutenant Colonel Elias Walker Durnford, Commanding Royal Engineer, he carried on works from Quebec City to Kingston, Ontario, including Fort Wellington at Prescott.

Their first child, John Lawrence Bolton, was born on 7 December 1825 at Drumcovitt House in the Parish of Banagher, County Londonderry, Ireland.

[39] Dogged by the unrealistically low estimates formed during the canal's conception before By's appointment, and despite early least-sum estimates at its inception, it was an impossible task to calculate the exact cost to construct the Rideau Canal—"135 miles long, through an uncleared country, with eighteen or twenty miles of excavation, some of which was rock, and deep cutting, with forty-seven locks to surmount, a difference of level of 455 feet, with a variety of extensive dams and waste weirs necessary to regulate the spring torrents of the Rideau River, which is the outlet of several lakes.

After almost seven years abroad, in New Zealand, Bolton arrived home[40]: 37  to the reality of Britain and France's support for Turkey, and their declarations of war upon Russia in late March 1854.

As the Crimean campaign invasion force assembled at Varna, Turkey, New York's Evening Post of 5 September 1854 reported from that scene of death—11,000 men from cholera, and more from dysentery and typhus—[42] that Ann Lawrance Bolton, wife of Colonel Bolton, and daughter of the late Judge John Lawrance of New York, had died at Varna on 2 August.

Stationed upon the frontier at Grahamstown, Eastern Cape, in early 1856 Bolton was elected a member of the newly formed Graham's Town Literary, Scientific and Medical Society[50]—founders of the Albany Museum.

Having resigned his command, and whilst moving on toward Cape Town in the expectation of returning home to England, he suffered a second crippling apoplectic fit at Port Elizabeth and died on 16 May 1860, aged 66.

The services attended by the Lieutenant Governor General Wynyard, CB, Commander of the Forces, Colonel Alexander Gordon, RE, the whole of the garrison troops, officers and men of HMS Brisk, and a large number of civilians and friends.

[52] The Grahamstown Journal wrote: In May, 1855, Major-General Bolton came to this country, principally at the insistence of Sir George Grey, after a very short sojourn with his family in England; he was stationed, until with a few weeks of his death, upon the frontier, where his amiable qualities and intelligent mind won for him deservedly the admiration and esteem of all who had the good fortune to be thrown in contact with him.

[53][40]: V–VI That year, Bolton's sister anonymously published a book of personal poetry in his memory, called The Rainbow, which included some of his poems.

[40] Thomas Bernard Collinson, RE, recalling his time in New Zealand, wrote: My commanding officer was Colonel Bolton, a most kind hearted and agreeable man; who took more interest in his friends than his Engineer duties.