Thomas Edison's Children

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Thomas Edison's Children

Mina Edison with Madeline and Charles. Courtesy: National Park Service, Edison National Historic Site
Edison and son Charles in the lab. Courtesy: Smithsonian Institution.

Like many men during his time Thomas Edison was the patriarch of a large family. Between his two wives, Mary and Mina, he fathered six children, a typical family size for the late 19th and early 20th centuries. Although Edison was a famous and wealthy man, being his child was often a difficult experience. Edison’s long hours in the lab meant a lot of time spent away from the family. Growing up in the great man’s shadow meant a lot of pressure on the kids to equal their father’s accomplishments.

Edison’s first child was a daughter, Marion, born in 1872. As a girl Edison affectionately called her “Dot,” a reference to Morse Code. Her little brother Thomas, Jr., was called “Dash.” Edison and Mary had a third child, William, who was born in 1878.

Mary Edison died in 1884, and Edison married 20-year old Mina Miller two years later. This marriage was difficult for some of Edison’s children to accept. Mina was closer in age to Marion then she was to her husband and the two had an uneasy, difficult relationship. Marion felt displaced in the family by Edison’s young wife. As a result of the tension between Mina and Marion a rift grew between Marion and her father as well. Marion often felt neglected by her father. As a teenager she spent a lot of time in Europe and at one point developed smallpox, a serious, potentially fatal disease. Throughout the seven week duration of the illness, she received only two letters from her father. This type of indifference hurt Marion very much.

In addition to becoming a stepmother to Edison’s three children with Mary, Mina Edison also had three of her own: Madeleine (1888), Charles (1890), and Theodore (1898). Like all of Edison’s children, they were subject to high expectations, both from their father and society in general. Edison would have liked to see some of them follow in his footsteps as an inventor, and although some did try, they generally met with modest success.

As a young man Thomas Jr. (Dash) capitalized on the Edison name in a number of failed business ventures, such as the “Edison Junior Lamp,” a technology to generate electricity from ocean waves, and a company to make ordinary iron out of steel. He later sold the use of his name to companies he was not involved with at all, such as one selling a quack medical device called the Magno-Electric Vitalizer. He tried his hand at mushroom farming, but was a failure. His disappointed father harshly called him “absolutely illiterate scientifically and otherwise.”

William briefly studied science at Yale Univesity, and later served in World War I. He was involved in several businesses, including an automobile repair shop in Washington, D.C., where he also invented some new designs for spark plugs. Unfortunately, William did not get along with his father, who said he had “brought the blush of shame” to his cheek many times. William later became a chicken farmer.

It has been said that the Edison child with the greatest aptitude for science and engineering was Madeleine. She was said to be quite sharp witted, and some have speculated that she might have followed in her father’s footsteps if women had been freer to pursue careers in science and engineering. Madeleine unsuccessfully ran for the U.S. Congress in 1938, and in the 1950s sat on the Board of Directors for the Western Union Company.

Of all the Edison children, Charles was the best known to the general public. In 1927 he took over the presidency of his father’s corporate organization, Thomas A. Edison Incorporated, and ran it until it was sold in 1959. Charles also flourished as a politician. In 1940 he briefly served as Secretary of the Navy under President Franklin D. Roosevelt. During his time as Secretary he decided to try a career in politics, and served as governor of New Jersey from 1941 to 1944.

The one who followed most closely in Edison’s footsteps was his youngest son Theodore. He graduated from MIT in 1923 with a degree in physics. He worked as a laboratory assistant for Thomas A. Edison, Inc., and worked his way up to director of research and engineering. Later on, he founded a company called Calibron Industries near the West Orange plant and began inventing on his own. He held 80 U.S patents by the time he died in 1992. Impressive, but it is only a small fraction of the 1093 held by his father.