George James Lidstone

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11 December 1870
London, England
12 May 1952
Edinburgh, Scotland

George Lidstone was an actuary who worked for various Edinburgh insurance companies. He wrote papers on various numerical and statistical topics.


George Lidstone's father was William Thompson Lidstone (born at West Avington, Devon about 1830) who was a bookkeeper. His mother was Eliza Munnings (born about 1832 in Hertford, Hertfordshire). He had four elder siblings: Alfred (born about 1856), Julia (born about 1858), Clara (born about 1861) and Frank (born about 1863).

George Lidstone attended Birkbeck School, Clapton. He then trained to be an actuary and, in 1891, he became a Fellow of the Institute of Actuaries. He was appointed as Assistant Actuary at the Alliance Assurance Company in 1893. He was promoted regularly in the Company becoming Joint Actuary in 1902, then later Actuary before being appointed Actuary and Secretary of the Equitable Life Assurance Society in 1905.

In 1913 Lidstone was appointed as Manager and Actuary of the Scottish Widows' Fund in Edinburgh. In 1925 he was awarded an honorary LL.D. by the University of Edinburgh and the university detailed the contribution which had led them to award Lidstone the degree:-
23 July 1925

George James Lidstone, F.I.A.

Mr Lidstone has keen invited here today as a leading representative of the great insurance corporations which have their home in Edinburgh, and the official head of the profession under whose skilful guidance this vast business is conducted. He is well known throughout the whole insurance world as a prime authority upon all questions of actuarial theory and practice. Thanks mainly to his educational zeal and the goodwill of the Faculty over which he presides, the training of young actuaries in the fundamentals of their science, which was formerly carried on entirely outside the University, has now been brought inside the pale, and lectureships have been established in the subject held by practising actuaries. The Senatus desires to mark its appreciation of this friendly spirit of co-operation In- including Mr Lidstone's name in the roll of honorary graduates.
His health caused some concern and in 1929, on the advice of his doctors, he resigned as Manager and, soon after, was made a Director. Lidstone's sight had deteriorated over a number of years and it caused him to give up his Directorships of the Scottish Widows' Fund and of the Royal Bank of Scotland.

Lidstone had married Florence Mary Gay and she died in 1942. The notice of her death appeared in the newspapers:-
Lidstone. At Hermiston House, Midlothian on 16 December 1942, Florence Mary Lidstone (formerly Gay), the beloved and devoted wife of George James Lidstone.
By now Lidstone was totally blind but he struggled on bravely facing the difficulties alone. He celebrated his 80th birthday on 11 December 1950:-

On Monday, 11 December 1950, George James Lidstone celebrated his 80th birthday. All who have had the privilege of visiting Mr Lidstone bear witness to the courage with which he has borne his affliction. In spite of the overwhelming handicap to one with his exceptionally active mind, he continues to take the closest interest in all the activities of the Institute and of the profession, and to apply himself to problems of today. His interest in even the most recent extensions of our professional activities is a continued source of encouragement to younger generations of actuaries. To be privileged to meet him is not only a personal pleasure but a stimulating experience.

In view of his outstanding services to actuarial science, the Institute decided to mark the occasion of his 80th birthday by presenting to him an Illuminated Address, a reproduction of which faces this page. Mr William Penman, a Past-President of the Institute, presented the Address in person to Mr Lidstone at his home in Edinburgh.

Mr Lidstone has since written the letter reprinted below.



On the 11th of this month, which was my 80th birthday, our good friend, Penman, very kindly called on me and delivered personally your letter of the 9th December and the very beautifully engrossed Address to myself, bearing the seal of the Institute and the signatures of yourself as President and Usherwood as Honorary Secretary.

I find it quite impossible to express at all adequately my thanks and gratitude for the very exceptional honour paid to me. The Address and your letter have given me the greatest pleasure, and they will be amongst the most treasured possessions of myself for the rest of my life and my family after me. When I attempt to recall such work as I have been able to do for the profession during my long connection with the Institute, I cannot feel that I really deserve all the many kind and flattering words of the Address and your letter, but for this very reason they are all the more gratifying, since I know that they spring in complete sincerity from the kindness and goodwill of the many good friends that I have been privileged to make. To all of them I send my warmest greetings and my most heartfelt thanks. Their kindness has deeply moved me, and I shall ever be more grateful than I can express.

Yours always sincerely,


23 Wester Coates Avenue
28 December 1950
Lidstone was elected a fellow of the Faculty of Actuaries on arriving in Edinburgh and he served on its council and as its president from 1924 to 1926. He was a member of the Edinburgh Mathematical Society, joining in January 1918. He read the paper Note on the Summation of a Trigonometrical Series to the Society at its meeting on Friday 10 March 1922.

He was elected to the Royal Society of Edinburgh on 4 March 1918, his proposers being Sir Edmund T Whittaker, George Macritchie Low, John Horne, Cargill Gilston Knott.

An obituary, written by R Ll Gwilt, appears in the Royal Society of Edinburgh Year Book 1953, pages 28-30.
We give a version of this obituary at THIS LINK.

Let us give a couple of examples of papers Lidstone wrote. In 1938 he published Notes on interpolation Part 1 then published Notes on interpolation Part 2 in 1941. W E Milne, reviewing the second of these, writes:-
This paper is composed of a series of commentaries, illustrated frequently with numerical examples, on the subject of interpolation. In particular the author considers the so-called "throw-back device," namely the adjustment of lower order differences (as, for example, in the tables published by the British Association for the Advancement of Science) so as to compensate in part for the omission of higher order differences. He further considers at some length Aitken's method of inverse interpolation by quadratic crossmeans.
In 1942 Lidstone published Notes on the Poisson frequency distribution. Feller writes:-
The author considers the Poisson distribution ... as an approximation to the binomial. As he points out, it is known ... that the corresponding Charlier type B series ... will give still better approximations. The author shows by numerical examples that in many cases this series gives a better fit than Pearson's type III curves.

References (show)

  1. R Ll Gwilt, George James Lidstone, LL.D., F.I.A., F.F.A., F.S.A., Royal Society of Edinburgh Year Book 1953, 28-30.

Additional Resources (show)

Honours (show)

Honours awarded to George Lidstone

  1. Lecturer at the EMS

Cross-references (show)

Written by J J O'Connor and E F Robertson
Last Update November 2007