Can any ATWT fans tell me who was Jennifer Munson Donovans' biological father since it wasn't Hal?

Darryl Crawford....

Brief Character History

Darryl Crawford, an old friend of Margo Hughes, arrived in Oakdale with his paralyzed wife, Carolyn, the heiress to the DeWitt fortune. Caught in a loveless marriage, Darryl was determined to stick by his wife despite her offer to grant him a divorce. While at Memorial Hospital with Carolyn, Darryl was shocked to see Barbara Munson who had just given birth to a baby girl, Jennifer. Since he and Barbara had had a tryst in Rome, Darryl was sure the child was his. He was truly saddened when Barbara told him that he was mistaken. Sensing how much Darryl wanted a child, and noticing how close he was becoming to Frannie Hughes, Carolyn offered to give him a child by way of a surrogate mother. He agreed and a surrogate was found, a young woman by the name of Dana Lambert. Dana was invited to live with the Crawfords and everything went fine until Carolyn was brutally murdered!

Though the evidence pointed to him, Darryl maintained his innocence. Sensing how fleeting life can be, Darryl proposed to Frannie and they quickly married in a beautiful ceremony in the Hughes's backyard. Not long after, Dana gave birth to his daughter, Carolyn Dana. Unfortunately, Darryl's happiness wouldn't last long. The evidence against him continued to mount and although Margo believed him to be innocent, Frannie had doubts and became terribly frightened of her new husband. As this was happening, Darryl learned that Barbara had lied to him: he WAS Jennifer's father! Not wanting to hurt Frannie, he kept the fact a secret. Darryl's secrets and mysterious past finally convinced Frannie that perhaps he was the murderer and she ran to Switzerland to escape him. Luckily, he followed her and convinced her to come home where he told her his dark secret: He didn't kill Carolyn. But he did have an affair with her half sister and so is the father of Barbara's child. It was during this confession that the couple was confronted by the actual murderer, George Jessup, Darryl's security guard who killed Carolyn on the orders of one of her business associates, Vicki Harper.

The investigation over, Frannie decided that she couldn't stay married to Darryl after the way she doubted him and gave him a divorce. Not wanting to cause anyone else any more pain, Darryl signed over all legal rights to Jennifer and left town with his other daughter, Carrie.

Jennifer's biological father was Darryl Crawford,a man Barbara met overseas during a business trip. One thing led to another,and

a few weeks after Barbara returned to Oakdale, she discovered she was pregnant. Darryl came to Oakdale on business,and soon discovered Barbara's secret. I don't remember exactly what happened to Darryl except that he died before Jennifer was born. BTW,Darryl was played by Rex Smith(you may remember him from the series Street Hawk).

watching now, could've sworn it was Hal. Think Craig will be sad that Jennifer is about to die?

There was contraversy but Hal is her father. It was believed that he wasn't for a while but he is!

hal is her father

if he isnt you might look on cbs.com