No, David Harewood and Marlon Harewood are not relatives.
David Harewood is a British actor and presenter.
He was born in Small Heath, Birmingham, United Kingdom, to Romeo Cornelius and Mayleen Cornelius.
He was a member of the National Youth Theatre. In his youth, he worked at a wine bar in Birmingham city centre.
In 1990, Harewood began his acting and appeared in The Hawk, Great Moments in Aviation, Harnessing Peacocks, Mad Dogs and Englishmen, Blood Diamond, The Merchant of Venice and Strings.
However, Marlon Anderson Harewood is an English former professional footballer who played as a striker. Harewood started his career at Nottingham Forest. During his career there, he had loan spells at Haka and Ipswich Town before joining West Ham United in 2003 and then Aston Villa in 2007.
He was born in Hampstead, London, United Kingdom. His parents details are not available.
In 2009, he spent short periods on loan at Wolverhampton Wanderers and Newcastle United. In 2011, he was on-loan with Barnsley and completed a six-month contract with Guangzhou R&F in China League One.