Woman in Chicago, 61, acts as surrogate mother for her own daughter, 35

An American woman in her 60s made history after she gave birth to her own grandson. 61-year-old Kristine Casey from Chicago acted as a surrogate mother for her 35-year old daughter Sara Connell, who had been trying for years to conceive.

Casey, already a mother of three adult children, is now believed to be the oldest woman in the state of Illinois to give birth. Casey gave birth to her last child about 30 years ago, according to International Business Times.

Casey carried Finnean, her new grandson and first grandchild, for a full-term pregnancy using her daughter's egg and her husband's sperm and then had a Cesarean section birth.

Since Kristine Casey's daughter, Sara Connell's egg was used in conjunction with sperm from her husband, the young couple are biological parents of Finnean.

Both parents appeared excited that somebody from the family would be so willing to do this for them.

Casey explained giving birth to her own three children as the happiest days of her life and believed her surrogate pregnancy for her daughter was a spiritual calling, Daily Health Report says.