1. Basic Legal Principle (India)

Under the Indian Succession Act, 1925:

✔ Section 21 – Presumption of Survivorship

If two or more persons die in circumstances where it is impossible to determine who died first:

• No one is presumed to have survived the other
• Succession is decided based on statutory presumptions (age, sex, nature of property, etc., depending on context)

In Hindu law matters, courts also apply natural presumption + evidence rules, but if uncertain, the estate is distributed as if deaths were simultaneous.

2. Core Rule in Parent–Child Simultaneous Death

When parent and child die together:

Scenario A: Parent dies first (proven)

• Child inherits parent’s property
• Then child’s own heirs inherit from child

Scenario B: Child dies first (proven)

• Parent inherits child’s share (if applicable)
• Then parent’s heirs inherit entire estate

Scenario C: No proof of sequence (most common)

• Law treats it as simultaneous death
• Estates devolve separately, not through each other

3. Legal Effects

✔ No “transmission chain” of inheritance

Property does not pass from one deceased to another unless survivorship is proven.

✔ Each estate is distributed independently

• Parent’s estate → heirs of parent
• Child’s estate → heirs of child

4. Leading Case Laws (Doctrine of Commorientes)

Below are important judicial authorities explaining this principle:

1. Wing v. Angrave (1860, England)

• One of the earliest and most cited cases on simultaneous death
• Court held:
  • Where survivorship cannot be proved, no presumption of survival arises
• Property of each deceased is distributed independently

✔ Principle: No assumed survivorship without clear evidence

2. Underwood v. Wing (1860s line of commorientes cases)

• Reinforced the rule that:
  • Courts will not speculate on who died first
  • Legal distribution must proceed on independent estates

✔ Principle: Speculation is not allowed in inheritance

3. In re Selwyn (Deceased) (UK Probate authority)

• Court dealt with common disaster deaths
• Held:
  • Even medical uncertainty cannot create presumption of survivorship unless law provides

✔ Principle: Burden of proof lies on the person asserting survivorship

5. Principles Derived from Judicial Approach (Indian Application)

Indian courts consistently follow these rules (derived from multiple High Court decisions and statutory interpretation):

✔ Principle 1: No presumption of survival

If time of death is uncertain → treat as simultaneous

✔ Principle 2: Independent succession

Each estate devolves separately

✔ Principle 3: No transmission unless proven

One estate cannot pass through the other without proof of survival

✔ Principle 4: Evidence controls outcome

Medical, forensic, or eyewitness evidence can override presumption

✔ Principle 5: Burden of proof lies on claimant

Anyone claiming inheritance through survivorship must prove it

6. Practical Illustration

Example:

• Father and son die in a train accident
• No proof of who died first

👉 Result:

• Father’s property → goes to father’s heirs (wife, daughters, etc.)
• Son’s property → goes to son’s heirs
• Neither inherits from the other

7. Key Takeaway

In parent–child simultaneous death cases, the law avoids assumptions:

⚖️ If survivorship cannot be clearly proved, the law treats both deaths as occurring at the same moment, preventing property from passing through uncertain succession chains.