There is no direct evidence that the details here refer to the same John Green Edgar who went to the Boys' High School, but the relatively unusual name suggests that it is likely.

Son of miner, John William Edgar, and wife Anne Edgar, John Green Edgar joined the High School on a Corporation Scholarship in September, 1901.

He became a pupil-teacher in March, 1905.

He went on to University where, in 1912, he was made 2nd Lieutenant with Durham University's Officer Training Corps.

He started his teaching career at Hexham Grammar School in 1910, and then Laygate Lane Boys' School in South Shields in 1911.

When war broke out he is recorded as joining the 3rd Battalion of the Durham Light Infantry, but later served with the Duke of Cornwall's Light Infantry, when rose to Captain, then Major, and joined the General Reserve of Officers. He was awarded the Military Cross on 1-Jan-1918.

He returned to teaching at Laygate Lane until 1922, when he moved to the Western School in Tynemouth, returning to South Shields to teach at Ocean Road Boys' School in 1925.

What happened to John after that is unclear, but records suggest that he became a reverend, and died on 5-Mar-1963 at the Church of St Nicholas in Newcastle.