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John Davidson Gray (c1884-1930) of Andrew Gray and Co
Son of Andrew Gray
1930 Obituary 
JOHN DAVIDSON GRAY died at a nursing home in St. Andrews, on July 30, 1930, after a brief illness, at the age of forty-six.
Mr. Gray was associated from his boyhood with the firm of Andrew Gray & Co., manufacturers of solders and anti-friction white metals, Govanhaugh Works, Govan Street, Glasgow, and became sole partner in 1911, on the death of his father, the late Mr. Andrew Gray.
He gave untiring attention to the consolidation and expansion of his business, and was keenly interested in all problems of metallurgical research affecting the non-ferrous metals trade. He was a man of sterling integrity, unassuming disposition, and likeable personality.
Mr. Gray was elected a Member of the Institute of Metals on December 28, 1923.