No one knows.
The name was never mentioned in the books but it says that he has more influence than Machiavelli's Elder.
Michael Scott has gone to a lot of trouble coming up with the names.
If you go on Wikipedia type in one of the characters names and they're real.
The point is it must be someone from a myth or legend that has had a great influence.
It also says on the Blurb on the Necromancer that Dr Dee has failed his Elder for not recovering the Codex pages.
He could be an Archon.
John Elder - cricketer - was born in 1949.
John Elder - shipbuilder - died in 1869.
John Elder - shipbuilder - was born in 1824.
John Kersey the elder died in 1690.
John Cleveley the Elder was born in 1712.
who is john dees family
John Pinch the elder died in 1827.
John Pinch the elder was born in 1769.
John Elder - cricketer - was born in 1949.
John Elder - shipbuilder - died in 1869.
John Elder - shipbuilder - was born in 1824.
John Brinsley the elder died in 1624.
John Rennie the Elder was born in 1761.
John Rennie the Elder died in 1821.
John Braithwaite the elder died in 1818.
John Braithwaite the elder was born in 1760.
John Kersey the elder died in 1690.