[4] Lewin was born to five siblings in his family consisting of three sisters (Mary-Jane, Harriet, Isabella) and two brothers (Robert Friend "Bob", William Charles James).

Lewin was also once granted a punishment of fifteen drills for "gross irreverence and disrepect" of loud applause at the end of a theological lecture which he claimed was sincere.

The glories and wonders of Alexandria and Cairo; the crossing of the pathless desert sands, strewn with skeletons of animals and shapeless masses of rok, over which we jolted heavily in our mule drawn vans, the dry burning heat of the Red Sea and the moist clinging warmth of the Indian Ocean and Ceylon; the strange new human creatures that swarmed round the ship, importunate for alms, as we stopped for coating; all passed before our eyes like a dream, as obstacles and delays in our now tedious journey.

[14] After relieving and reinforcing Lucknow, Lewin arrived at Cawnpore General Campbell, escorting 2000 women, children and the vulnerable to a place of safety.

[14] After Tantya Tope sealed off the town from the west and east with the capture of Bani Bridge to Lucknow, the British forces, while outnumbered, decided to strike first.

We were now running through a little copse, advancing under whatever cover we could find towards the enemy's guns, until at last we came to an open place and I saw stretched before me a large plain broken by shrubs and rocks, every nook and corner of which was filled with red-coated sepoys firing at us, and I was lost in astonishment that I was not hit; but we rushed on straight at them, and just then a fellow tumbled down close to me; I thought he had tripped and stopped to help him, but found he was doubled up in a heap with his face a pool of red blood.

At last we came to a stop under the shelter of a house and were here in comparative safety, for which I was heartily thankful, as I was terribly blown.The advance continued and Lewin skirmished towards a village and overran a few snipers with bayonets.

The regiment hastily improvised barricades out of wagons, carts, bricks and other materials which lead to casualties as the rebels fired upon them including General Carthew who Lewin offered a drink from his flask.

[20] In January, Lewin and the 34th were sent to the Madras Artillery detachment at Bani Bridge between Cawnpore and Lucknow to furnish guards for convoys, take supplies to the Alambagh and maintain communications with the south.

[21] Reaching Lucknow the 34th was considered to be reduced in strength and strenuously campaigned, which led to them and Lewin being assigned subsidiary tasks in the recapture of the city.

Pughe had been appointed inspector general of the new military police and, with Grote's influence, offered Lewin the post of adjutant and second-in-command of the 2nd battalion being raised at Rampur in West Bengal.

As a result, on 17 April 1962, Lewin was gazetted District Superintendent of Police, 3rd class, at Bhagalpur in northern Bihar with a ₹500 monthly salary and ₹100 allowance for travel expenses.

After being called upon to shoot a rogue alligator which had eaten a child, Lewin was assigned to Muzaffarpur on temporary duty to organize the new civil police system there before the commandant arrived.

[32] Lewin would subsequently, as superintendent, take a tour with the deputy commissioner to the Santhals, a wild aboriginal race whose language and religion differed from the Indians.

Lewin dressed up as a native and, with ten men, pursued the bandits for six weeks in the rainy season by sleeping rough and eating rice and chapati.

As a result, Ellis was dismissed while the secretary of Bengal characterized Lewin's part in the incident as evasive and untrustworthy to be fit to lead a district.

Lewin chased dacoits who had robbed a moneylender but reached the scene of the crime where the victim had hanged themself after the devastating loss.

The application was written by police Captain Graham, a former superintendent of the Hill tracts, and was backed by the deputy commissioner of Chittagong and his uncle Arthur Grote.

[45] While waiting on his application to become superintendent of the hill tracts, Lewin's regiment colonel ordered a customary examination to show a continuation of fitness.

[46] Lewin initiated a district tour in the new year with a Magh interpreter, Sadu, and his son Apo to carry his pistol and hunting knife.

[16][50] In capacity of his role he established relations on behalf of the British to local chieftains such as Mong Raja, Kalindi (rani) and Rutton Poeia (Rothangpuia).

After the kidnapping of Mary Winchester (Zoluti), Lewin was assigned political officer to Charles Henry Brownlow's column in the Lushai Expedition.

[51] Later the lieutenant-governor received a full account of Lewin's adventurous journey which coincided with the time of a Lakher (Mara) raid on a Mrung village half a day's march from the outpost at Chima.

[56] Lewin would subsequently receive a report of a Lushai raid on three Banjogi villages under the Bohmong chief, which saw four people killed and eighty men and women captured as bawis.

After being promoted to 3rd grade deputy commissioner he was given a European assistant and permitted to recruit Gurkhas for the frontier police force and acquired nine elephants for civil engineering works.

[80] In preparation for the departure, Lewin arranged the Bohmong Rajah to supply men to replace the frontier police at the outposts before removing them for timidness.

Rothangpuia was sent back to his village to arrange for road extensions, furnish unhusked rice as fodder for the transport of elephants and send messengers to the Howlong chiefs who held Mary captive.

[98] Lewin advised Brownlow to hold a few terms, such as releasing the captives, swearing an oath of friendship, and pledges to stop raiding and provide free access in the villages.

[112] With influence of his aunt and wife of the late Arthur Grote, the lieutenant governor Sir Richard appointed Lewin to the superintendent of Cooh Behar State.

[122] After the outbreak of World War One, Lorraine would send a letter to Lewin detailing the current events of the Chittagong Hill Tracts such as the death of Saipuia and the succession of Rothangpuia.