John Spencer Stanhope
John Spencer Stanhope( 1787–1873) was an English landowner and antiquarian.
Richard Spencer (journalist)
Richard John Spencer( born in London, England 3 June 1965) is a British journalist.
He was the Middle East Editor for" The Daily Telegraph".
John Spencer, 1st Earl Spencer
John Spencer, 1st Earl Spencer( 19 December 1734 – 31 October 1783) was a British peer and politician.
Mary Catlin
Mary Catlin was the daughter of Sir Robert Catlyn.
She married Sir John Spencer, son of Sir John Spencer of Althorp, Northamptonshire, and his wife Katherine Kitson, the daughter of Sir Thomas Kitson of Hengrave, Suffolk.
Later in life she married Edward Glascoke after 1600.
The child of Mary Catlin and Sir John Spencer was Robert Spencer, 1st Baron Spencer of Wormleighton.
John Spencer Letts
John Spencer Letts( December 19, 1934 – November 10, 2014) was a United States District Judge of the United States District Court for the Central District of California.
Judith Roberts (actress)
Judith Anna Roberts( born December 1, 1934) is an American actress, best known for her roles as Mary Shaw in James Wan's horror film" Dead Silence"( 2007), and as Taslitz, one of" The Golden Girls", in the Netflix comedy- drama series" Orange Is the New Black".
John Spencer Smith
John Spencer Smith FRS( 11 September 1769 – 5 June 1845) was a British diplomat, politician and writer.
John Spencer (Australian footballer)
John Spencer (7 August 1927 – 3 April 1998) was an Australian rules footballer who played with Carlton in the Victorian Football League (VFL).
John Spencer (Lord Mayor of London)
Sir John Spencer( died 1610) was a successful English merchant and lord mayor of London.
John Palmer (TV journalist)
John Spencer Palmer( September 10, 1935 – August 3, 2013) was an American news correspondent for NBC News, American television broadcaster and news anchor.

Question: Did John Spencer Letts and Judith Roberts (Actress) share the same nationality?
Answer: yes