Golden Dawn title

Lord of Victory

Divinatory meanings

Victory; obstacles swept aside, the first necessary victories of the Pure Fool. A newly initiated elder flexes his or her first powers.

MacGregor Mathers

Attempt, Hope, Desire, Wish, Expectation.

Reversed

Infidelity, Treachery, Disloyalty, Perfidy.

Astrological attributions

The second or Succedent decan of Leo is ruled by Jupiter from August 3rd-12th

Magical Image of the Second Face of Leo in Picatrix

In the second face of Leo  ascends an image with hands lifted up, and a man on whose head is a Crown; he has the appearance of an angry man, and one that threatens, having in his right hand a Sword drawn out of the scabbard, & in his left a buckler; it hath signification upon hidden contentions, and unknown victories, & upon base men, and upon the occasions of quarrels and battles.

Picatrix commentary

It is easy to see why Mathers chose Victory as the title.