Faith Hill's brother Zachary White has reportedly been coming to the aid of his country superstar sister to help patch things up with her husband Tim McGraw.

A family insider reportedly told The National Enquirer that White has been acting as a "mediator" for the couple that is rumored to be having marriage troubles. He has visited the couple's homes in Tennessee, California and the Bahamas in a bid to help save their marriage.

"In some ways, Zachary has saved Faith and Tim's marriage - for now," a source told American tabloid the National Enquirer. "He's acted as a mediator between Faith and Tim during some of their worst blowups and helped them talk through their problem."

White, himself, told The National Enquirer that he is helping his sister and his brother-in-law because they are "both amazing, down-to-earth people."

"Their love and support have been nothing short of extraordinary," he said.

Hill wed McGraw in 1996 after they met during the Spontaneous Combustion Tour. It is the second marriage for Hill. The couple has three daughters--Maggie, Gracie and Audrey.

The National Enquirer previously reported that the couple hit a marital bump when McGraw stepped out without his wedding ring. The country crooner was reportedly so bothered by her "controlling" ways he ditched the band when he attended the iHeart Radio Music Festival in Las Vegas on Sept. 21.

Hill reportedly gave her husband an ultimatum, saying, "Put the ring back on - or don't come home!" said the source. "She said if he wants to battle her for a divorce, she would take their kids and every cent he has. Her mes­sage was loud and clear."

"But Tim wasn't expecting the ultimatum, and he was extremely upset," the source shared in the October report. "He hadn't thought it through, and after Faith told him she would ruin him, he realized he wasn't ready to call it quits just yet. So when he performed on stage that night, he had the wedding ring back on. And he told Faith that he'd just left it in his dressing room after taking a shower. But she knew he was covering up."

Despite the allegations, Hill and McGraw attended the 2013 CMA Awards at the Bridgestone Arena in Nashville, Tenn. on Nov. 6. They attended with their friend and musician Keith Urban. Urban and McGraw took home two awards that night for their collaboration on the single with Taylor Swift, Highway Dont Care.