A Houston woman who conceived without fertility drugs or in vitro fertilization has given birth to a rare set of identical quadruplets.

They are among fewer than 50 such sets ever recorded in the world.

KHOU TV in Houston reports Daphne, Chloe, Bonnie and Adele Breedlove are the first set of identical quadruplets ever born at Woman's Hospital of Texas in Houston.

The babies weighed between two and two-and-a-half pounds at birth.

Two of the four babies were born two months ago – three months prematurely -- and may get to go home this week where their 15-month-old brother awaits them.

Their mother, Shelley Breedlove, is herself an identical twin.

She says she'll use homemade ankle bracelets to keep track of her daughters.