Gregory T. Doyle President, Domestic Insurance Company Operations American Re-Insurance Company Revenue: $3 billion Employees: approx. 1,500 Gregory T. Doyle's paternal grandfather came to this country from Ireland in the early part of the century and, in Doyle's words, "worked many long, hard and proud years as a New York City fireman." Doyle has carried on his family's … [Read more...] about The 100 Most Influential Irish Americans in Business: G. Doyle – W. Farley