Henry Armstrong Westmacott (c1862-1945)of Sir W. G. Armstrong Mitchell and Co, Elswick Works, Newcastle-on-Tyne.
1946 Obituary 
HENRY ARMSTRONG WESTMACOTT was a Member of the Institution for half a century, having been elected in 1895. For many years he was associated as a director with the firm of Messrs. John Spencer, of Newburn, Northumberland, until the liquidation of the company. After serving his apprenticeship with Messrs. Armstrongs at their Elswick works, Newcastle upon Tyne, he was employed by the firm as their representative in Italy for several years until he began his long connection with Messrs. Spencers. Mr. Westmacott was a Justice of the Peace for the county of Northumberland for thirty years.
His death occurred at Newcastle in his eighty-third year on 25th November 1945.