What matters is that Henry belonged to the larger hunting party and was close enough to react quickly once the king was dead.
Walter Tirel became the official or traditional shooter.
That name would follow him through history.
Yet the case against him is not as simple as the popular story suggests.
Walter Tirel Had Every Reason to Flee Even If the Death Was Accidental
Imagine being the man who has accidentally killed the king.
The king's relatives are nearby.
Armed nobles surround the forest.
There is no modern legal system preparing a careful forensic inquiry.
There is no guarantee anyone will believe you.
Accidental regicide could still destroy your family, lands, and life.
Flight would be rational.
This is important because Tirel's escape is often treated as evidence of guilt.
It can be.
It can also be evidence of fear.
The two look identical from a distance.
If he knew the shot was accidental, he might flee because he expected punishment.
If he had deliberately murdered William, he might flee because he expected discovery.
Either way, the horse goes toward the coast.
This is the central frustration of the case.
Many facts support more than one interpretation.
Tirel Was Later Said to Have Denied Shooting William at All
A later account associated with the French chronicler and churchman Suger reported that Tirel denied killing the king.
According to this tradition, Tirel insisted he had not been in the position to fire the fatal arrow.
The denial is fascinating.
It is not decisive.
It came through later reporting.
Memories change.
Reputations matter.
A man accused of killing a king has obvious reasons to deny it.
Yet if Tirel had simply been the universally accepted accidental shooter, why deny the event so strongly later?
Perhaps he feared the permanent stain of regicide.
Perhaps someone else had fired.
Perhaps the entire story of his shot had been created because a convenient man had already fled.
Each possibility deepens the uncertainty.
There Was No Medieval Crime Scene Investigation
The body was not preserved for forensic examination.
No ballistic reconstruction occurred.
No investigator mapped the location of hunters.
No arrows were labeled and sealed as evidence.
No witness was cross-examined under modern standards.
No precise wound report survives.
The idea of solving the death through physical evidence is therefore almost hopeless.
Historians are left with narrative evidence.
Chronicles.
Later traditions.
Political behavior.
Motive.
Opportunity.
That is enough to generate theories.
Not enough to convict anyone.
The distinction matters.
William Fell, and the Hunt Collapsed
A living king organizes everyone around him.
A dead king creates a vacuum.
The difference can occur in seconds.
One moment men are following William through the forest.
The next they are looking at a body and wondering who rules England.
This is the moment where medieval politics becomes brutally immediate.
There is no constitutional announcement waiting in London.
No automatic machinery transferring power.
Dynastic expectation matters.
Baronial acceptance matters.
Control of royal treasure matters.
Control of castles matters.
Coronation matters.
Possession can become legitimacy if achieved quickly enough.
Henry understood this.
Whatever grief he felt for William—and the brothers' relationship had been complicated—he did not allow grief to control the political timetable.
He moved.
Henry Went Toward Winchester
Winchester was enormously important.
The royal treasury was there.
Money meant soldiers.
Money meant rewards.
Money meant the practical ability to act like a king.
A crown without resources could become a claim.
Resources could turn a claim into government.
According to the traditional account, Henry hurried to Winchester and demanded access to the treasury.
William de Breteuil, the treasurer, resisted.
His objection was straightforward.
Robert was the elder brother.
Under the expected succession, the treasure should be preserved for Robert.
This confrontation may be one of the most revealing moments after William's death.
Henry did not calmly wait for a council to determine the succession.
He asserted himself.
The argument became tense.
Henry had supporters.
The treasury was opened to him.
Whether every detail of later retellings is exact, the larger outcome is unquestioned.
Henry obtained control of the royal treasure.
Once he had it, his position changed dramatically.
He was no longer merely the younger brother standing near a dead king.
He was the man holding the machinery of kingship.
This Is Where Conspiracy Theories Find Their Strongest Fuel
If Henry had arranged William's death, what would he need to do afterward?
Secure money.
Gain supporters.
Move rapidly before Robert could return.
Take the crown.
That is exactly what happened.
But there is another explanation.
If Henry had not arranged the death, what would an intelligent, ambitious prince need to do after his brother died unexpectedly?
Secure money.
Gain supporters.
Move rapidly before Robert could return.
Take the crown.
That is also exactly what happened.
The same behavior fits guilt and opportunism.