The Weir Group plc (LSE: WEIR) is an engineering company headquartered in Glasgow, Scotland. It is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index. The company operates in over 70 countries employing approximately 13,000 people focused on mining, oil and gas and power markets.

The Company was established in 1871 as an engineering firm by two brothers, George and James Weir, founding G. & J. Weir Ltd. The Weir brothers produced numerous groundbreaking inventions in pumping equipment, primarily for the Clyde shipyards and the steam ships built there. These pumps became extremely well known for their use as boiler feedwater pumps, and for ship's auxiliary equipment such as evaporators.

Under W G Weir, the company turned to producing munitions and war materiel in the First World War. As well as shells, they manufactured aircraft including the Royal Aircraft Factory F.E.2 fighter and bomber.

James George Weir (aviator, son of James Galloway Weir) a director of the company formed the Cierva Autogiro Company. G & J Weir would be a financial supporter of the company for several years. In 1943, they provided the finances for the construction of the W.9, an experimental helicopter, to Air Ministry requirements.

John Garvin "Johnny" Weir-Voronov (born July 2, 1984) is an American figure skater. He is a three-time U.S. National Champion (2004–2006), the 2008 Worlds bronze medalist, a two-time Grand Prix Final bronze medalist, and the 2001 World Junior Champion. Weir did not skate competitively in the 2010–11 or 2011-12 seasons. In January 2012, he announced he would return to competition in the 2012-13 season.

Weir was born in Coatesville, Pennsylvania, to John and Patti Weir. He is of Norwegian heritage. He has a brother, Brian, who is four years younger. Weir was raised in Quarryville, Pennsylvania, a town in southern Lancaster County. As a child, he was a successful equestrian, competing with his pony, My Blue Shadow, an Arabian-Shetland cross.

Soon after Weir began skating at the age of 12, his family moved to Newark, Delaware so he could be near his training rink and coach. In the summer of 2007, he moved to Lyndhurst, New Jersey, and began training in nearby Wayne. Weir was an honor roll student at Newark High School and studied linguistics part-time at the University of Delaware before dropping out to concentrate on his skating. He is a self-proclaimed Russophile who admires the skating style and culture of Russia and taught himself to speak and read the language. He also speaks some French.

Robert Hall "Bob" Weir (born October 16, 1947) is an American singer, songwriter, and guitarist, most recognized as a founding member of the Grateful Dead. After the Grateful Dead disbanded in 1995, Weir performed with The Other Ones, later known as The Dead, together with other former members of the Grateful Dead. Weir also founded and played in several other bands during and after his career with the Grateful Dead, including Kingfish, the Bob Weir Band, Bobby and the Midnites, RatDog, and his newest band Furthur, co-led by former Grateful Dead bassist Phil Lesh.

During his career with the Grateful Dead, Weir played mostly rhythm guitar and sang most of the band's rock-n-roll tunes (Jerry Garcia sang The Dead's more melodic tunes). He is known for his unique style of complex voiceleading, bringing unusual depth and a new approach to the role of rhythm guitar expression.^{[citation needed]}

Weir was born in San Francisco, California and raised by his adoptive parents in the suburb of Atherton. He began playing guitar at age thirteen after less successful experimentation with the piano and the trumpet. He had trouble in school because of undiagnosed dyslexia and he was expelled from nearly every school he attended, including Menlo Atherton High School in Atherton and Fountain Valley School in Colorado. At Fountain Valley he met John Perry Barlow, who later wrote the lyrics to a number of Grateful Dead songs.