Question: A pair of boxers, who are brothers, one of which competed from 1977 to 1997 and won titles in five weight divisions, are from what city in Maryland?

Context articles: Roman Rurua
Ștefan Rusu
2010 M-1 Challenge season
Sugar Ray Leonard
Roger Leonard
Floyd Mayweather Jr.
Diego Corrales
Steve Shepherd
Ricky Burns
Thomas Hearns

Roman Rurua (Georgian: რომან რურუა , born 25 November 1942) is a Georgian retired featherweight Greco-Roman wrestler from Georgia.
 He competed for the Soviet Union at the 1964 and 1968 Summer Olympics and won a silver and a gold medal, respectively.
 Between 1966 ad 1970 he was undefeated internationally and won four consecutive world titles.
 At the 1971 World Championships he injured his back and placed sixth.
 Domestically, he won Soviet titles in different weight divisions in 1963–1965, 1967, 1970 and 1971.
 In 1972 he retired from competitions, graduated from Georgian Polytechnic Institute, and started to work as an engineer.
 In 1988 he co-founded the political organization Sporting Georgia, and in 1999–2003 was a member of Parliament of Georgia.
 Rurua also served as vice-president of the Georgian Wrestling Federation and was inducted into the FILA International Wrestling Hall of Fame in 2010.
Ştefan Rusu (born 2 February 1956) is a retired Greco-Roman wrestler from Romania.
 He competed at the 1976, 1980 and 1984 Olympics and won a silver, a gold and a bronze medal, respectively.
 He also won world titles in different weight divisions in 1978 and 1982 and European titles in 1978–1981 and 1985.
 After retiring from competitions he worked as a wrestling coach in Romania and in Turkey.
The 2010 M-1 Challenge season was the third season of mixed martial arts (MMA) fighting presented by the M-1 Global promotion.
 The season started on February 5 and will conclude with the M-1 Challenge XXII event on December 10.
 Unlike in previous years where competition was arranged entirely around country-based teams, the 2010 competition had a greater focus on individual achievement.
 Rather than the sixteen "country" teams of the 2009 competition, the 2010 M-1 Challenge featured eight teams representing four "continents" – Europe, Russia, Americas and Asia – with each continent having two teams.
 Four of the teams are drawn from the M-1 Selection events whilst the other four are selected from, and featured, veteran MMA fighters.
 Events held near the end of the year featured bouts to crown inaugural M-1 Global Champions in each of the five weight divisions.
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.
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.
Floyd Joy Mayweather Jr. (born Floyd Joy Sinclair; February 24, 1977) is an American professional boxing promoter and former professional boxer.
 He competed from 1996 to 2007 and 2009 to 2015, and made a one-fight comeback in 2017.
 During his career, he held 15 world titles in five weight classes and the lineal championship in four different weight classes (twice at welterweight), and retired with an undefeated record of 50–0, surpassing Rocky Marciano's record of 49–0.
 As an amateur, Mayweather won a bronze medal in the featherweight division at the 1996 Olympics, three U.S. Golden Gloves championships (at light flyweight, flyweight, and featherweight), and the U.S. national championship at featherweight.
Diego "Chico" Corrales Jr. (August 25, 1977 – May 7, 2007) was an American professional boxer who competed from 1996 to 2007.
 He was a multiple-time world champion in two weight divisions, having held the IBF super featherweight title from 1999 to 2000; the WBO super featherweight title in 2004; the WBO lightweight title from 2004 to 2006; and the WBC, "Ring" magazine, and lineal lightweight titles from 2005 to 2006.
Steve Shepherd is a five-time world kickboxing champion and a top pioneer kickboxing promoter in the state of Florida.
 He defeated eight world champions from five weight divisions, four of them during their championship reigns.
 He also decisioned future world champions Don Wilson, Ted Pryor, Dale "Apollo" Cook and Bob "Thunder" Thurman.
Ricky Burns (born 13 April 1983) is a British professional boxer from Scotland.
 He is one of only three British boxers to have won world titles in three weight divisions and the first from Scotland, having held the WBO super-featherweight title from 2010 to 2011; the WBO lightweight title from 2012 to 2014; and the WBA super-lightweight title from 2016 to 2017.
 At regional level he held the Commonwealth super-featherweight title from 2008 to 2009, and has challenged for the British and European super-featherweight titles.
Thomas "Tommy" Hearns (born October 18, 1958) is an American former professional boxer who competed from 1977 to 2006.
 Nicknamed the "Motor City Cobra", and more famously "The Hitman", Hearns' tall and slender build allowed him to move up over fifty pounds in his career and become the first boxer in history to win world titles in four weight divisions: welterweight, light middleweight, middleweight, and light heavyweight.
 By later winning a super middleweight title, he also became the first to win world titles in five weight divisions.