De Vega (September 10, 1892 - January 9, 1971) was born Alexander Mackay Stewart in Glasgow, Scotland.
He contributed to many magazines. His first was in 1909 when he began writing for The Sphinx. Then for The Magic Wand, Sterling's Magical World and Spitari's Wizard's Annuals.
With Chris Van Bern he wrote A Whirlwind of Wizardry in 1919. De Vega travelled around with his own full length evening show in Scotland and knew most of the "greats" in the golden age of magic. He was a founding member of the Scottish Conjurers Association, a member of the Inner Magic Circle of over 50 years, a member of the British Ring and an Honorary Vice-President of Hull Magicians' Circle. He invented the Divided Lady illusion which is said to have inspired Robert Harbins' Zig-Zag Girl.