How old was Francis Stewart Hepburn when Jean Hepburn died?

What was the age (length of time since creation) of Francis Stewart Hepburn, 5th Earl of Bothwell (1563 - 1612), the nephew of James Hepburn, the fourth Earl of Bothwell, and a grandson of James V of Scotland at the time Jean Hepburn, Mistress of Caithness, Lady Morham (died 1599), the Scottish noblewoman and a member of the Border clan of Hepburn is someone who died on?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
1599 is the date of death of Jean Hepburn ([fact: ["242955754@trueknowledge.com"]])

1563 is the birthdate of Francis Stewart Hepburn ([fact: ["17835645@trueknowledge.com"]])

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 36 years old is the age of Francis Stewart Hepburn

Fact 1 is true at 1599

Fact 1: 36 years old is a age

Fact 1: 36 years old applies to Francis Stewart Hepburn

Fact 1 is true at 1599

I used the following facts to provide this answer:

1599 is the date of death of Jean Hepburn

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1563 is the birthdate of Francis Stewart Hepburn

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