Background: James Harold Doolittle (December 14, 1896 - September 27, 1993) was an American aviation pioneer. A Reserve officer in the United States Army Air Corps, Doolittle was recalled to active duty during World War II. He was awarded the Medal of Honor for personal valor and leadership as commander of the Doolittle Raid, a bold long-range retaliatory air raid on the Japanese main islands, on 18 April 1942, four months after the attack on Pearl Harbor. The attack was a major morale booster for the United States, and Doolittle was celebrated as a hero.
Context: Doolittle married Josephine "Jo" E. Daniels on December 24, 1917. At a dinner celebration after Jimmy Doolittle's first all-instrument flight in 1929, Josephine Doolittle asked her guests to sign her white damask tablecloth. Later, she embroidered the names in black. She continued this tradition, collecting hundreds of signatures from the aviation world. The tablecloth was donated to the Smithsonian Institution. Married for over 70 years, Josephine Doolittle died in 1988, five years before her husband.  The Doolittles had two sons, James Jr., and John. Both became military officers and pilots. James Jr. was an A-26 Invader pilot in the U.S. Army Air Forces during World War II and later a fighter pilot in the U.S. Air Force in the late 1940s through the late 1950s. He committed suicide at the age of thirty-eight in 1958. At the time of his death, James Jr. was a Major and commander of the 524th Fighter-Bomber Squadron, piloting the F-101 Voodoo.  His other son, John P. Doolittle, retired from the Air Force as a Colonel, and his grandson, Colonel James H. Doolittle III, was the vice commander of the Air Force Flight Test Center at Edwards Air Force Base, California.  James H. "Jimmy" Doolittle died at the age of 96 in Pebble Beach, California on September 27, 1993, and is buried at Arlington National Cemetery in Virginia, near Washington, D.C., next to his wife. In his honor at the funeral, there was also a flyover of Miss Mitchell, a lone B-25 Mitchell, and USAF Eighth Air Force bombers from Barksdale Air Force Base, Louisiana. After a brief graveside service, fellow Doolittle Raider Bill Bower began the final tribute on the bugle. When emotion took over, Doolittle's great-grandson, Paul Dean Crane, Jr., played Taps.
Question: Did he marry?
Answer: Doolittle married Josephine "Jo" E. Daniels on December 24, 1917.

Background: James Watt  (30 January 1736 (19 January 1736 OS) - 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1781, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world. While working as an instrument maker at the University of Glasgow, Watt became interested in the technology of steam engines. He realised that contemporary engine designs wasted a great deal of energy by repeatedly cooling and reheating the cylinder. Watt introduced a design enhancement, the separate condenser, which avoided this waste of energy and radically improved the power, efficiency, and cost-effectiveness of steam engines.
Context: From an early age Watt was very interested in chemistry. In late 1786, while in Paris, he witnessed an experiment by Berthollet in which he reacted hydrochloric acid with manganese dioxide to produce chlorine. He had already found that an aqueous solution of chlorine could bleach textiles, and had published his findings, which aroused great interest among many potential rivals. When Watt returned to Britain, he began experiments along these lines with hopes of finding a commercially viable process. He discovered that a mixture of salt, manganese dioxide and sulphuric acid could produce chlorine, which Watt believed might be a cheaper method. He passed the chlorine into a weak solution of alkali, and obtained a turbid solution that appeared to have good bleaching properties. He soon communicated these results to James McGrigor, his father-in-law, who was a bleacher in Glasgow. Otherwise he tried to keep his method a secret.  With McGrigor and his wife Annie, he started to scale up the process, and in March 1788, McGrigor was able to bleach 1500 yards of cloth to his satisfaction. About this time Berthollet discovered the salt and sulphuric acid process, and published it so it became public knowledge. Many others began to experiment with improving the process, which still had many shortcomings, not the least of which was the problem of transporting the liquid product. Watt's rivals soon overtook him in developing the process, and he dropped out of the race. It was not until 1799, when Charles Tennant patented a process for producing solid bleaching powder (calcium hypochlorite) that it became a commercial success.  By 1794 Watt had been chosen by Thomas Beddoes to manufacture apparatus to produce, clean and store gases for use in the new Pneumatic Institution at Hotwells in Bristol. Watt continued to experiment with various gases for several years, but by 1797 the medical uses for the "factitious airs" had come to a dead end.
Question: Are there any other interesting aspects about this article?
Answer:
in March 1788, McGrigor was able to bleach 1500 yards of cloth to his satisfaction.