Trigon Lords
greek: Τριγωνοκράτορες (Trigonokratores)
Definition
Trigon Lords are the three planets assigned to each of the four elemental triplicities — fire, earth, air, water — known in Greek as trigonokratores (Τριγωνοκράτορες, "rulers of the trigon"). Each element gets a day ruler, a night ruler, and a participating ruler, and these three govern the element's three signs. In the Dorothean time-lord framework they also act as life-phase indicators, marking how a life unfolds in stages.
In Tradition
Astrologers treat the Dorothean table of trigon lords as sect-modulated — it shifts with whether you were born by day or by night — and it does two jobs: it grants essential dignity (3 points in Lilly's scheme) and frames the life-phases. Brennan, Crane, and Hand, following Dorotheus, Valens, and Ptolemy, read the day trigon lord of the sect light's sign as governing early life, the night lord the middle, and the participating ruler the final phase.
In Practice
You start by finding the chart's sect — diurnal or nocturnal. The Dorothean table gives each element three rulers: fire (Aries, Leo, Sagittarius) — Sun by day, Jupiter by night, Saturn participating; earth (Taurus, Virgo, Capricorn) — Venus, Moon, Mars; air (Gemini, Libra, Aquarius) — Saturn, Mercury, Jupiter; water (Cancer, Scorpio, Pisces) — Venus, Mars, Moon. In a day chart the day ruler leads; in a night chart the night ruler; the participating ruler supports both. Dorotheus' Carmen Astrologicum Books I-II direct you to read the trigon lords of the sign holding the sect light for life-phase prediction: the first lord's condition — sign, dignity, aspects, phase — governs the first third of life, the second the middle, the participating ruler the final stretch. A well-dignified, angular trigon lord signals a favorable phase; a weak, cadent one a hard phase. Finer timing — profections and zodiacal releasing — fills in these broad strokes.
Historical Origin
The Dorothean table of trigon lords is set out in Dorotheus of Sidon's Carmen Astrologicum Books I-II (1st c. CE Greek; 3rd c. Pahlavi via Sasanian transmission; 8th c. Arabic via 'Umar al-Tabari), in Vettius Valens' Anthologiae (c. 145-175 CE), and in Ptolemy's Tetrabiblos I.19, where Ptolemy proposes his own slightly modified table. The doctrine is preserved through Hephaistio, Firmicus Maternus, and the Arabic-Persian transmission (Masha'allah, Abu Ma'shar), and reaches Latin medieval practice through Bonatti's Liber Astronomiae.
Etymology
Origin: Greek. Meaning: Rulers of the trigon (triangle/triplicity).
Further Reading
- Dorotheus of Sidon, Carmen Astrologicum Books I-II (trans. Dykes)
- Chris Brennan, Hellenistic Astrology: The Study of Fate and Fortune
- Joseph Crane, Astrological Roots: The Hellenistic Legacy