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Ernst & Whinney

A simplified family tree for the firm of Ernst & Whinney showing the development of the firm and how the firm's name has evolved.

Family Tree

This tree is reproduced with the kind permission of Peter Boys and Accountancy magazine. It was originally published in the May 1989 issue of Accountancy (p88).


Harding & Pullein 1848 not Harding & Pullin 1848
Harding, Pullein, Whinney & Gibbons 1859 not Harding, Pullin, Whinney & Gibbons 1859

Whinney, Murray & Co 1965 not Winney, Murray & Co 1965

Youngs & Co c 1840 not Young & Co c 1840

Blackburns, Barton, Mayhew & Co 1920 not Blackburn, Barton, Mayhew & Co 1919

Turquands Barton Mayhew & Co 1972 not Turquand, Barton, Mayhew & Co 1972

Note 2 John Young's son, Frederic John Young, was president of the ICAEW 1917-19 (Frederic John Young's obituary, The Accountant, 1 April 1922, p.452).

H W Blackburn commenced practice in 1844, his brother John, who became a member of the first Council of the ICAEW, joined him shortly afterwards in partnership as H W & J Blackburn; John's son, J H Blackburn, was a member of Council for a record 51 years (The History of the Institute of Chartered Accountants in England and Wales, 1870-1965, Heinemann, 1966, p.228).

The firm of Barton, Mayhew & Co started in 1907 as Barton & Mayhew, changing its name to Barton, Mayhew & Co in 1910. The merger with H W & J Blackburn to form Blackburns, Barton, Mayhew & Co occurred in 1920, not 1919. (History of Barton, Mayhew & Co, H O H Coulson, incomplete draft typescript, no date and ICAEW List of Members, 1881-1988.)

John Baker began in practice on his own account in 1893, before forming the partnership Baker & Howard in 1894 (The Story of Baker Sutton & Co, typescript, [1978]).


Ernst & Whinney merged with Arthur Young in September 1989 to form Ernst & Young (Accountancy, August 1989, p.12).

Ernst & Young announced that it had adopted EY as its global brand name on 1 July 2013.

What's in a name: Firms' simplified family trees

Between January and December 1989, accounting historian Peter Boys prepared a series of simplified family trees showing the development of the big accountancy firms of the day.

The original trees from 1989 have been reproduced here with a series of textual updates from Peter Boys which have taken the story forward to May 2005, the 125th anniversary of ICAEW. Since then, the staff of the ICAEW Library & Information Service have added notes on further changes that have taken place.

If you are aware of any further information which would add to or improve the accuracy of the family trees please let us know. You can contact us at library@icaew.com

© Original trees are copyright of Accountancy Magazine and CCH.

© Updates are copyright of Peter Boys.