A Forsyth County teenager injured in a crash that claimed the life of his grandfather has succumbed to his injuries.

Joseph Jude "Joe" Dumphy, 15, died Monday morning after sustaining life-threatening injuries during a June 11 accident in front of Chestatee subdivision on Ga. 400.

"We received confirmation from coroner Ted Bearden that he did pass away this morning," said State Patrol spokesperson Robin Stone Monday.

A rising sophomore at North Forsyth High School where he was a member of the varsity golf team and Fellowship of Christian Athletes, Dumphy was also a member of Chestatee Golf Club in Dawsonville and played on the Hurricane Junior Golf Tour.

According to his obituary, he put his heart and soul into everything he did with dedication and an incredible work ethic. "

The family said Dumphy was even in death able to make an impact by donating of five of his organs to others in need so that they may live.

Dumphy's grandfather, John Joseph Dumphy, 78, died at the scene of the June collision, according to Dawson County Emergency Services Director Billy Thurmond.

The elder Dumphy's wife was also injured in the collision.

"We transported the woman to Northeast Georgia Medical Center by ambulance, and the teen was flown to Grady," Thurmond said following the incident.

Authorities said Dumphy failed to yield the right of way to an oncoming Jeep, driven by Justin Wade Isbell of Dahlonega, who was headed north on Ga. 400.

"Witnesses stated that [Dumphy] stopped at the stop sign but then slowly drove across [Ga.] 400 when his car was struck by the Jeep," Stone said.

An 18-year-old passenger in the Jeep, Ramona Ball of Talking Rock, was also injured in the crash when the vehicle overturned on impact.

"She was ground transported to Northeast Georgia Medical Center with a spinal injury," Stone said.

Isbell and a second passenger were not injured.

Stone said everyone in both vehicles, except for the elder Dumphy, were wearing seatbelts.

She also said drugs and alcohol were not considered factors in the wreck, and charges would not be filed as the driver at fault was killed.

Staff writer Michele Hester contributed to this story.