Matthew Rooney, the grandson of Pittsburgh Steelers legendary founder Art Rooney, died at his Hamptons home on Friday, the team confirmed to The Post. He was 51.

“The Rooney Family is mourning the loss of Matthew,” the Steelers said in a statement to The Post.

A cause of death was not revealed. 3

Rooney was born in Meadowbrook, Pa., on Nov. 11, 1973 to JoAnn Wallace Rooney and John J. Rooney, a minority shareholder of the Steelers until he sold a majority of his 16 percent stake in 2009.

Matthew Rooney graduated from NYU with a Bachelor of Arts before earning his Master’s at Columbia University.

The writer, artist and lover of ballet and opera was remembered by his family in an online obituary.

He split time living in New York and Los Angeles before settling down in Brooklyn H

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