Quintus Horatius Flaccus
The Third Book Of The Odes Of Horace (Chap. 22)
Ode XXII
To Diana
O virgin, protectress of the mountains and the groves, thou three-formed goddess, who thrice invoked, hearest young women in labor, and savest them from death; sacred to thee be this pine that overshadows my villa, which I, at the completion of every year, joyful will present with the blood of a boar-pig, just meditating his oblique attack.