Newcastle 2(Armstrong 48, 59)
Barnsley battled brave and true but lost narrowly to 'Category One' Newcastle United at Oakwell in the FA Youth Cup 3rd Round.
Adam Armstrong struck twice for the visitors - who started with five internationals in their line-up - and 15-year-old Jack Alton replied with the goal of the tie late on but the Reds could have been ahead in the first half.
With six minutes on the watch, Callum Pilkington cushioned wide as Templeton's delivery found the striker eight yards out.
Adam Armstrong replied for the Magpies as his vicious drive flew over on 25 minutes but it remained goalless until three minutes into the second period.
Kemen forced Chadderton, who had a fine night between the sticks, into a brilliant save on 47 minutes. The resulting corner fell for Armstrong inside the area, and his shot was cleared into the roof of the net by the despairing boot of Maris on 48 minutes.
Eleven minutes later, Armstrong again found the net but this time his finish was much more decisive. After drifting in from the left he unleashed a great low drive in off the post to double his side's lead.
With 67 minutes gone George Maris was extremely unlucky to see his fine effort chalked off as the flag raised on the near side, but it was unclear exactly what the infringement was.
The visitors showed their class with some neat football but Barnsley never gave up, even when 15-year-old James Bree was withdrawn through injury - forcing the Reds down to 10 men.
Fellow Under 16 Jack Alton fired in an incredible strike on the volley in the first minute of stoppage time to make it 2-1.
"I'm very, very proud," said Under 18s Coach Chris Howarth. "We knew they were a good side. We knew it would be tough for us.
"I thought we were unlucky in the first half, it could have been different. George's goal looked like it might have been onside and for the young lad (Jack Alton) to score at the end is fantastic.
"I thought James Bree at right-back did ever so well. As a team they worked really hard and I'm gutted for them."
Reds: Chadderton, Bree, Smith, Cowgill, Freeman, Rogerson (Holgate 56), Pilkington, Biggins, Nana (Ndlovu 61), Maris, Templeton (Alton 80).
Subs not used: Moore, Rusling.
Newcastle: Pearson, Drennan, Booth, Olley (Heardman 80), Satka, Gillesphey, Gilliead (Barlaser), Kemen (Roberts 85), Quinn, Armstrong, Aarons.
Subs not used: Woolston, McKinnon.