Rick Diamond / WireImage 1 / 5
Rick Diamond / WireImage 1 / 5

They run to you, baby! Lady Antebellum's Dave Haywood and his wife Kelli Cashiola Haywood are proud new parents to a baby boy, his rep confirms to Us Weekly.

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Their first child, son Cash Van Haywood, was born late Sunday, Sept. 7. According to the rep, baby Cash weighed in at 7 pounds and was 19 inches long.

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The joyous birth announcement was first posted to the Grammy-winning country band's Twitter page on Monday. 

So happy to have a healthy baby boy here with us! Cash Van Haywood was born last night, Mom & Dad are doing great and couldn't be happier!

— Lady Antebellum (@ladyantebellum) September 8, 2014

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As for the origins of baby Cash's name? While most would like to believe "Cash Van Haywood" was a tribute to music legends Johnny Cash and Van Morrison, it was actually an ode to the baby's grandparents.

"Cash is taken from Kelli's maiden name Cashiola and Van is Dave's father's name," the rep tells Us.

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The "Need You Now" hitmaker and his wife revealed via Facebook in April that they were expecting a baby. "So excited for a new Baby A on the way in Sept!" the couple wrote. "And it's a boy!!!"

The birth of Haywood's son comes one year after Lady Antebellum singer Hillary Scott welcomed her first child with her husband Chris Tyrrell last July. Like guitarist Haywood, Scott also shared the news of her daughter's birth via Twitter -- and later, even posted an adorable baby picture of her daughter Eisele Kaye to her page.