Boston-based insurance company John Hancock donated $1 million to a fund set up by Massachusetts Gov. Deval Patrick and Boston Mayor Thomas Menino to help those families affected by Monday’s Boston Marathon bomb blasts.

 According to Menino, support from the business community was immediate. "Within an hour, I had calls from business leaders and local philanthropists who, like me, were heartbroken by the impact this hideous tragedy has had on individuals, their families, and friends," he said in a statement. "And they want to do everything they can to help these people physically and psychologically in the future."

 The cornerstone donation to The One Fund Boston is a $1 million commitment from John Hancock.

 Other individuals and corporations making commitments to The One Fund Boston include Jack Connors, founding partner of Hill Holliday; John Fish, CEO of Suffolk Construction; Brian Moynihan, president and CEO of Bank of America; Paul Grogan, president of The Boston Foundation; Steve Pagliuca, managing director of Bain Capital and co-owner of the Boston Celtics; Larry Lucchino, CEO of the Boston Red Sox; and Mike Sheehan, CEO, and Karen Kaplan, president of Hill Holliday.

 To contribute to The One Fund Boston, visit onefundboston.org.