Question: What is the name of Robert Dr Niros characters wife?

Context paragraphs:
On Cheong Jewellery: On Cheong Jewellery was founded in 1936 by Mr Ho Yew Ping, an emigrant of Guangdong Shunde province of China, who left Guangdong at age 14 to seek his fortune in Malaysia in 1925.  In Penang and later Perak, he apprenticed as a goldsmith before marrying in Guangdong and moving to Singapore with his newly-wedded wife.  On Cheong started a small goldsmith shop known as On Cheong Goldsmith on North Bridge Road.  The name "On Cheong" or "安昌" in Chinese is derived from the phrase "平安昌盛", meaning peace and prosperity.  On Cheong moved to its current location, a shophouse on South Bridge Road, in 1941.  In the 1940s, Mr Ho Yew Ping also acquired Kwong Yik and Nan Jing Goldsmiths to expand the company.  The company was incorporated as On Cheong Co Pte Ltd in 1949.  Mr Ho Yew Ping’s wife, Mdm Leung Chew Fun, and the eldest son, Dr Ho Nai Kiong, took over the operations of the business after Mr Ho Yew Ping's passing in 1965.  Its current Managing Director, Mr Ho Nai Chuen, the youngest of Mr Ho Yew Ping’s children, began managing the business in 1985.  On Cheong Jewellery is one of the pioneer members of the Singapore Jewellers Association (SJA), a non-profit organisation established in 1939 representing jewellery operators in Singapore.  Mr Ho is currently the President of SJA.

David Sillar: David Sillar (1760–1830), farmer, poet, grocer, schoolteacher and baillie was a close friend of the poet Robert Burns.  He died in 1830, aged 70 after a long illness, and was buried in Irvine's Old Parish Church cemetery.  His eroded gravestone was replaced by a facsimile thanks to the Irvine Burns Club.  He married twice and had only one son survive him, a Dr Zachary Sillar M.D. of Liverpool.  His father was Patrick Sillar, tenant farmer at Spittalside near Tarbolton, Ayrshire.  He first married a widow, Mrs Margaret Kerr, née Gemmell shortly after moving to Irvine and had seven children and his second wife was the sister of John Bryan of the Sun Inn, Kilmarnock.

DR Studios: DR Studios (formerly known as Deep Red Games) is a video game developer based in Milton Keynes in the United Kingdom.  DRS primarily develops strategy games, such as "".  The company was formed in 1998 by Kevin Buckner and Clive Robert, and since then they have released fifteen games.  In 2007, following a management buyout, the company name was changed to DR Studios.

Robert Dulhunty: Robert Venour Dulhunty (1803 – 30 December 1853) is chiefly remembered as being the first permanent white settler of what has since become the City of Dubbo, in the rural heartland of the Australian state of New South Wales.  The well read son of a medical practitioner, Dr John Dulhunty, and the doctor's wife, Jane Dulhunty (née Smith), he also was one of the wealthiest and most enterprising citizens of the then Colony of New South Wales during the late-Georgian and early-Victorian eras.

Ruth Madoff: Ruth Madoff (née Alpern; born May 18, 1941) is the wife of Bernie Madoff, the convicted American financial fraudster.  She was director of Bernard L. Madoff Investment Securities.

Dr. Jekyll and Sister Hyde: Dr. Jekyll and Sister Hyde is a 1971 British film directed by Roy Ward Baker based on the novella "Strange Case of Dr Jekyll and Mr Hyde" by Robert Louis Stevenson.  The film was made by British studio Hammer Film Productions and was their third adaptation of the story after "The Ugly Duckling" and "The Two Faces of Dr. Jekyll".  The film is notable for showing Jekyll transform into a female Hyde; it also incorporates into the plot aspects of the historical Jack the Ripper and Burke and Hare cases.  The two characters were played by the film's stars, Ralph Bates and Martine Beswick.

The Wizard of Lies: The Wizard of Lies is a 2017 American television drama film directed by Barry Levinson and written by Sam Levinson, Sam Baum, and John Burnham Schwartz, based on the non-fiction book of the same name by Diana B. Henriques.  The film stars Robert De Niro as businessman Bernard Madoff, Michelle Pfeiffer as his wife Ruth Madoff, and Alessandro Nivola as their older son Mark Madoff.  It aired on HBO on May 20, 2017.

Dr. Jekyll and Mr. Hyde (disambiguation): Dr. Jekyll and Mr. Hyde are characters in Robert Louis Stevenson's 1886 novella "Strange Case of Dr Jekyll and Mr Hyde".

Henry Killigrew (playwright): Dr Henry Killigrew (1613–1700) was the fifth and youngest son of Robert Killigrew and his wife Mary.  He was the younger brother of the dramatist Thomas Killigrew, and became chaplain and almoner to the Duke of York, and master of the Savoy after the Restoration.

Eugene Chantrelle: Eugene Marie Chantrelle (born Nantes 1834, died Edinburgh 31 May 1878) was a French teacher who lived in Edinburgh and who was convicted for the murder of his wife, Elizabeth Dyer.  He is claimed to be the inspiration for Robert Louis Stevenson's character Dr Jekyll featured in "The Strange Case of Dr Jekyll and Mr Hyde".  Stevenson met Chantrelle at the home of Victor Richon, Stevenson's old French master.

Supporting paragraphs: The Wizard of Lies Ruth Madoff
Answer: Ruth Madoff