How old was Thomas Edison when Pierre Trudeau was born?

What was the age (length of time since creation) of Thomas Alva Edison, the American inventor, scientist and businessman who developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb at the time Joseph Philippe Pierre Yves Elliott Trudeau, PC, CC, CH, QC, MSRC, usually known as Pierre Trudeau or Pierre Elliott Trudeau, the 15th Prime Minister of Canada from 20 April 1968 to 4 June 1979, and again from 3 March 1980 to 30 June 1984 is born on (has as his or her date of birth)?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
October 18th 1919 is the birthdate of Pierre Trudeau ([fact: ["18791007@trueknowledge.com"]])

February 11th 1847 is the birthdate of Thomas Edison ([fact: ["19290823@trueknowledge.com"]])

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 72 years, 8 months and 7 days old is the age of Thomas Edison

Fact 1 is true at October 18th 1919

By calculation (generator: ["applies_at_timepoint@trueknowledge.com"]) I know that:
Fact 1 is true at October 1919

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 72 years, 8 months and 7 days old is a age

Fact 1: 72 years, 8 months and 7 days old applies to Thomas Edison

Fact 1 is true at October 18th 1919

By calculation (generator: ["ismoreaccurate1@trueknowledge.com"]) I know that:
October 18th 1919 is a more accurate version of October 1919

I used the following facts to provide this answer:

October 18th 1919 is the birthdate of Pierre Trudeau

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February 11th 1847 is the birthdate of Thomas Edison

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