Question: Roger Leonard's brother competed between what years?

Context paragraphs:
Benny Leonard: Benny Leonard (born Benjamin Leiner; April 7, 1896 – April 18, 1947) was an Jewish American professional lightweight boxer.  Widely considered one of the all-time greats, he was ranked 8th on "The Ring" magazine's list of the "80 Best Fighters of the Last 80 Years" and placed 7th in ESPN's "50 Greatest Boxers of All-Time".  In 2005, the International Boxing Research Organization ranked Leonard as the #1 lightweight, and #8 best pound-for-pound fighter of all-time.  Statistical website BoxRec rates Leonard as the 2nd best lightweight ever, while "The Ring" magazine founder Nat Fleischer placed him at #2.  Boxing historian Bert Sugar placed him 6th in his Top 100 Fighters catalogue.  Leonard is a member of the National Jewish Sports Hall of Fame, the International Jewish Sports Hall of Fame, the Ring Magazine Hall of Fame, the World Boxing Hall of Fame, and the International Boxing Hall of Fame.

Leonard Shockley: Leonard Melvin Shockley (1941/1942 – April 10, 1959) was a juvenile executed in the United States on April 10, 1959, for a murder committed when he was under the age of 18.  Shockley, a black male, was executed in Maryland in a gas chamber for the murder of shopkeeper Sarah Hearne on January 16, 1958.  Shockley (then 16) was involved in the robbery of a small shop in Dorchester County, Maryland.  He was accompanied by his older brother, 23-year-old Harold Edward Shockley.  Hearne was found stabbed several times in the back and breast, and her throat had been cut.  The young culprits were identified by an eye witness.  Leonard was 17 years of age at the time of his execution making him the last instance of a juvenile being executed in America.  His brother received life in prison.  Harold Shockley was later released from prison in an unknown year and was arrested for a single petty theft in 1999.  As of 2016, Harold Shockley is in his 80s and still lives in Worcester County in Snow Hill, Maryland.

Roger Leonard: Roger Leonard (born July 21, 1953) was a professional boxer from Palmer Park, Maryland.  He is the older brother of boxing legend Sugar Ray Leonard, who he introduced to boxing.

Hal Leonard Corporation: Hal Leonard Corporation is a United States music publishing and distribution company founded in Winona, Minnesota, by Harold "Hal" Edstrom, his brother, Everett "Leonard" Edstrom, and fellow musician Roger Busdicker.  Currently headquartered in Milwaukee, Wisconsin, it is the largest sheet music publisher in the world.

I Want to Be Your Man: "I Want to Be Your Man" is a song by American funk singer-songwriter Roger Troutman, from his third studio album "Unlimited! ".  It was released as the lead single from the album in 1987 by Reprise Records.  The song was co-written by Roger's brother, Larry Troutman, and produced by Roger, who conceived of the song as a statement on romantic commitment.  "I Want to Be Your Man" features Roger singing in both his natural tenor and his trademark talk box.

Leonard Calvert: Leonard Calvert (1606 – June 9, 1647) was the first proprietary governor of the Province of Maryland.  He was the second son of George Calvert, 1st Baron Baltimore (1579–1632), the first proprietor of Maryland.  His elder brother Cecil (1605–1675), who inherited the colony and the title upon the death of their father George, April 15, 1632, appointed Leonard as governor of the Colony in his absence.  Leonard was named after his grandfather, who was Leonard Calvert of Yorkshire.

Aristocrat Records: Aristocrat Records, sometimes billed as the Aristocrat of Records, was founded in April 1947 by Charles and Evelyn Aron, together with their partners Fred and Mildred Brount and Art Spiegel.  By September Leonard Chess had invested in the young record company.  Over time, Leonard bought the others out, and by 1948, only he and Evelyn Aron ran the firm.  By early 1950 Leonard and his brother Phil had become the sole owners, and in June of that year they changed the company's name from Aristocrat to Chess Records.  The Aristocrat brand was officially discontinued in January 1951.

Sarah Leonard: Sarah Henrietta Leonard, mistakenly referred to in some sources as Everett "Eve" Leonard (21 March 1862 – 5 June 1951), was a British archer.  She competed at the 1908 Summer Olympics in London.  Leonard competed at the 1908 Games in the only archery event open to women, the double National round.  She took 21st place in the event with 410 points.

Sugar Ray Leonard: Ray Charles Leonard (born May 17, 1956), best known as "Sugar" Ray Leonard, is an American former professional boxer, motivational speaker, and occasional actor.  Often regarded as one of the greatest boxers of all time, he competed from 1977 to 1997, winning world titles in five weight divisions; the lineal championship in three weight divisions; as well as the undisputed welterweight title.  Leonard was part of "The Fabulous Four", a group of boxers who all fought each other throughout the 1980s, consisting of himself, Roberto Durán, Thomas Hearns and Marvin Hagler.

Leonard Spence: Hubert Leonard Spence (May 23, 1909 – November 10, 1947) was a swimmer from British Guiana (present-day Guyana) who competed for Bermuda in the 1936 Summer Olympics.  In 1933, the three brothers Leonard, Wallace and Walter Spence won the 3×100 medley relay at the Amateur Athletic Union (AAU) championships – the only such feat in the AAU history.  Later, they set a world record in this event.  Leonard participated in the 1936 Summer Olympics in the 100 m freestyle, 200 m breaststroke and 4 × 200 m freestyle events, but did not reach the finals.  In 1967, the Spence brothers were inducted to the International Swimming Hall of Fame.

Supporting paragraphs: Roger Leonard Sugar Ray Leonard
Answer: 1977 to 1997