Alfarrobeira, 1449: what a chart can say about a disputed death
Medieval chronicles occasionally record a birth to the hour. When they do, they hand the historian of astrology something rare: a chart for a documented life, cast from a source with no astrological interest in the outcome.
One such case is the Portuguese Infante Dom Pedro, Duke of Coimbra — second son of King João I and Philippa of Lancaster, born in Lisbon in December 1392, an hour after midnight, according to the chronicle of Fernão Lopes. He died at Alfarrobeira on 20 May 1449, and the manner of his death has been disputed since the day it happened.
Reading the chronicle against the chart
The interesting exercise is not to predict what is already known. It is to read the chronicler's physical and character descriptions against the chart and see how far the correspondence goes — because the chronicler was not writing to please an astrologer.
A dignified Saturn in the first house is a reasonable place to start for a man the chronicles describe as reserved, courteous and studious, with a long face and coarse hair. Saturn strong by exaltation and triplicity produces the courtesy; Saturn in the first produces the reserve; and the physical description follows the tradition's account of a Saturnian appearance more closely than chance would explain.
The Moon on the Ascendant in Libra, ruling the Midheaven, fits a man known for adaptability, for political skill and for extensive travel — he visited London, Bruges, Venice, Rome, Hungary and Spain, and was nicknamed the prince of the seven corners of the world. A ninth-house ruler in the third, aspecting both the Ascendant and the Moon, is the standard traditional signature for a life of journeys, short and long alike.
This is the honest use of a historical chart: not to demonstrate that astrology works, but to see whether a technique applied without foreknowledge of the description reproduces it. Sometimes it does. Where it does not, that is worth recording too.
Enemies, and a regency
Dom Pedro was not born to rule. He became regent for his nephew after his elder brother died of plague, held the regency for a decade, and lost it to a court faction that had spent years working against him.
The chart's account of that is unusually legible. A debilitated Mercury ruling the twelfth describes secret enemies who are clever, argumentative and disloyal — enemies who work by gossip and intrigue rather than by force. A debilitated Mars ruling the seventh and conjunct the tenth describes open opponents who are resentful and aggressive, and places the conflict in public view. The Moon, ruling the Midheaven, is squared by one malefic and conjoined by the other, and every one of these planets is angular, which in traditional terms means none of it could be kept quiet.
There is a nice technical point here. The Moon is not besieged, although it looks as though it should be: besiegement requires separation from one malefic and application to the other with nothing intervening, and here Mercury interposes. But Mercury rules the twelfth. The interposing planet is itself an enemy — relief in form and not in substance, which is exactly what the history records.
The disputed death
Dom Pedro died at Alfarrobeira from a single arrow to the heart. His body bore no other wound and no sign of a fight, which for a man of fifty-seven directing a battle from behind his escort is not how a battlefield death normally looks. The chronicler says plainly that the bowman was well known, highly skilled, and chosen to hasten his death. In modern terms: a sniper.
The natal testimonies for a violent end are present — one planet ruling both the Ascendant and the eighth, which the tradition reads as the native contributing to his own downfall; that planet combust, cadent, and opposed by Mars from a sign that governs the chest.
The year's solar revolution repeats every one of them: the Moon again on the Ascendant and again afflicted by both malefics; the lord of the revolution's Ascendant combust in the eighth; the ruler of allies peregrine and cadent, and ruling the houses of opponents and death as well, so that allies and enemies share a significator; the lord of secret enemies angular in the tenth.
What this settles, and what it does not
It settles nothing about the identity of the bowman, and it was never going to. What it does show is the tradition's actual claim: that a chart describes the character of an event — here, death by a human hand, from a distance, arranged by enemies who were concealed and powerful — and does so in a way that can be compared against an independent record.
The comparison is the whole value of the exercise. A chart read after the fact can be made to fit anything; a chart whose testimonies are listed first, and then checked against a chronicle written by someone with no interest in astrology, is doing something else.
A larger cycle
Alfarrobeira also sits at a hinge in mundane terms. The Jupiter–Saturn conjunctions were leaving the air signs for the water signs, and the conjunction preceding the battle fell in July 1444 at nine degrees of Cancer — on Dom Pedro's Midheaven. The conflict itself was between two ideas of government, the feudal and the centralising, and the fifteenth century was about to settle it. Mundane technique does not explain a man's death. It does place it.
Our research projects collect birth data of this kind from Portuguese chronicles and archives, with the sources recorded in each case.