Mary's immediate relatives including parents, siblings, partnerships and children in the Knowles family tree.

Mary's Family

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Mary Knowles Partner Child Partner Child

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Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

Elisabeth Knowles Svendsen, MBE

John & Melvina Brown's anniversary

Claire (Mohney) Knowles

William Knowles

Knowles siblings-Lakeland

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Refresh this page to see various historical events that occurred during Mary's lifetime.

In 1907, in the year that Mary Knowles was born, radiometric dating, a recently discovered technology that could date rocks, found that the earth was 2.2 billion years old which was dramatically older than previously thought. Later refinements and advancements in science would date the age of the earth at over 4.5 billion years.

In 1942, by the time she was 35 years old, due to World War II, automobile production in the United States was stopped on February 1st. A tire rationing program had begun the month before. Detroit - the main hub of car manufacturing - was ordered to free up assembly lines for military production. The president of the Automobile Manufacturers Association said “The automotive industry is in this war all the way". Some dealerships had to close and others expanded their repair shops. The used car market boomed (as did a black market in used cars).

In 1967, Mary was 60 years old when on October 2nd, Thurgood Marshall was sworn in as the first black US Supreme Court justice. Marshall was the great-grandson of a slave and graduated first in his class at Howard University Law School. His nomination to the Supreme Court was approved by the Senate, 69 to 11.

In 1979, at the age of 72 years old, Mary was alive when on March 28th, a partial nuclear meltdown occurred at the power plant at Three Mile Island Pennsylvania. Radiation leaked into the environment, resulting in a rating of 5 on a scale of 7 ("Accident With Wider Consequences") . It ended up costing $1 billion to clean up the site.

In 1990, in the year of Mary Knowles's passing, on April 24th, the Hubble telescope was launched into space after long delays due to the Challenger explosion. An optical flaw was found within weeks of launch but was fixed within three years. The discoveries made possible by the Hubble have contributed to scientists' understanding of the universe.