Ricardo Horta
Ricardo Jorge Luz Horta( born 15 September 1994) is a Portuguese professional footballer who plays for S.C. Braga and the Portugal national team as a right winger.
Samuel Braga
Samuel Braga is a Brazilian Jiu- Jitsu black belt and ten- time world champion.
Samuel is a member of the Gracie Barra competition team and currently owns and runs an academy in Knoxville, Tennessee.
There are several other affiliate schools of his in the surrounding area.
Including, but not limited to, Leviathan Jiu- Jitsu, Maryville Jiu- Jitsu, and Seymour Brazilian Jiu Jitsu Academy.
He was awarded his black belt in 2005 by Vinicius" Draculino" Magalhães.
He is a native of Belo Horizonte, Brazil.
Jordan Santos
Jordan Alexandre Grilo Santos better known as Jordan( born 2 July 1991) is a Portuguese beach soccer player.
He plays as a forward for S.C. Braga and for the Portugal national beach soccer team.
Luis Nlavo
Luis Miguel Nlavo Asue( born 30 November 2002) is an Equatorial Guinean footballer who plays as a forward for the youth team of Portuguese club SC Braga and the Equatorial Guinea national team.
Regina Pereira
Regina Carvalho Pereira( born 13 August 1992) is a Portuguese football defender who plays for S.C. Braga and the Portugal women's national football team.
Vanessa Marques
Vanessa Marques Malho( born 12 April 1996) is a Portuguese football midfielder who plays for S.C. Braga and the Portugal women's national football team.
João de Sousa
D. João de Sousa( 1647- 28 September 1710) was a Portuguese prelate, Bishop of Porto, Archbishop of Braga and Archbishop of Lisbon.
Isaak Mints
Isaak Izrailevich Mints( Исаа́к Изра́илевич Минц)( 1896- 1991) was the leading Soviet historian in the early and mid-twentieth century.
In 1949 he lost most of his academic positions following a campaign against him by his colleague Arkadiĭ Sidorov that was part of the drive by Joseph Stalin to eliminate the" rootless cosmopolitans", most of whom were Jewish.
Dolores Silva
Dolores Isabel Jacome Silva( born 7 August 1991) is a Portuguese international football player.
She plays as a midfielder for Braga and the Portugal women's national team.
Arkadiĭ Sidorov
Arkadiĭ Lavrovich Sidorov( 27 January( 8 February) 1900 – 11 March 1966) was a Russian historian.
A member of the Communist Party from an early age, he was educated as a political activist and did party work before serving in the Second World War during which he was wounded.
He started an academic career in Moscow and received his doctorate from Moscow State University( MSU) where he also taught before joining the Institute of History of the Academy of Sciences of the USSR of which he became director.
He campaigned against the MSU professor and Jewish academician Isaak Mints during Joseph Stalin's anti-Semitic drive against the" rootless cosmopolitans" as a result of which Mints lost most of his academic positions.
The zeal with which Sidorov opposed Mints was remembered when a position became vacant for a corresponding member of the USSR Academy of Sciences and Sidorov was not elected.
He edited" Istoricheskie zapiski" and was on the editorial board of the" Great Soviet Encyclopedia" and the" Soviet Historical Encyclopedia".
He was instrumental in the publication of 18 volumes of documents on the 1905– 07 Revolution and ten volumes on the October Revolution of 1917.
He researched the development of capitalism in Russia which he concluded had developed largely independently of the rest of Europe, and is considered to have been the father of a new direction in Soviet historiography.

Question: Were Samuel Braga and Arkadiĭ Sidorov of the same nationality?
Answer: no