The regional director of McCann in North America and the father of two boys suffered a fatal heart attack at his home in New York last Saturday.
Gault, Ben Langdon's predecessor as the managing director of the McCann office in London, was a trusted lieutenant of the McCann-Erickson boss, John Dooner, leading some insiders to suggest that he might be the first non-American to take charge of Interpublic's flagship operation.
He spent almost his entire 23-year agency career at McCann apart from an 11-month spell as the chief operating officer at Euro RSCG Worldwide in 1991.
He was in day-to-day charge of McCann in London until September 1995, when he was appointed to run the network's operation in Japan, Korea and Taiwan.
He moved to North America in January 2001 where he took over a 17-office regional network posting billings of more than $10 billion.