Cecile Eledge, 61, and Uma Louise Dougherty-Eledge (5 pounds, 13 ounces) are both doing fine after the birth at Nebraska Medicine in Omaha.
Eledge volunteered to be the surrogate for her son Matthew, 32, and husband Elliot Dougherty, 29, when the couple mentioned their desire to start a family.
"There was no moment of hesitation," Cecile Eledge said in a news release from Nebraska Medicine. "It was natural instinct."
Dougherty's sister donated an egg after Eledge underwent several tests in order to see if she was healthy enough for pregnancy.
"We are thankful with how the whole process worked," Matthew Eledge said. "We are really grateful that both Uma and her grandma are here, happy and healthy. For the time being, we're just going to relax and enjoy this moment."