Question: The Widower is a British television miniseries that portrays the life and crimes of convicted murderer Malcolm Webster,  an Englishman convicted of the murder of who? 

Context paragraphs:
Sheila LaBarre: Sheila LaBarre (born Sheila Kay Baley on July 4, 1958 in Fort Payne, Alabama) is an American convicted murderer.  She was sentenced to two consecutive life sentences, with no prospect of parole after being convicted of killing two men, Kenneth Countie and Michael DeLoge, in Epping, New Hampshire.  At the time of the crimes, LaBarre lived in Epping, New Hampshire (Rockingham County) on a farm.

Judy Buenoano: Judias "Judy" Buenoano (born Judias Welty, also known as Judias Goodyear and Judias Morris) (April 4, 1943 – March 30, 1998) was a convicted murderer who was executed for the 1971 murder of her husband James Goodyear.  She was also convicted for the 1980 murder of her son Michael Buenoano and of the 1983 attempted murder of her fiancé John Gentry.  She is also acknowledged to have been responsible for the 1978 death of her boyfriend Bobby Joe Morris in Colorado; however, by the time authorities made the connection between Buenoano and Morris, she had already been sentenced to death in the state of Florida.

Public Enemies (TV series): Public Enemies is a three-part British television drama series, written by playwright Tony Marchant, that is based upon the professional and private lives of Paula Radnor, a probation officer working within the British Probation Service, who is working with convicted murderer Eddie Mottram, who has served 10 years in prison for the murder of his 17-year-old girlfriend, and is struggling to adapt to life outside of prison.  First broadcast on BBC One from 4 to 6 January 2012, the series stars Anna Friel as Radnor and Daniel Mays as Mottram, and encompasses a cast including Georgina Rich, Aisling Loftus, Peter Wight, Barbara Marten, Nicholas Gleaves, Joe Armstrong and Barnaby Kay.  The series was directed by Dearbhla Walsh, with Will Gould acting as executive producer.

The Widower (miniseries): The Widower is a British television miniseries originally broadcast in three one-hour installments on ITV in 2014.  The series portrays the life and crimes of convicted murderer Malcolm Webster.  ITV described the show as: "The Widower tells how, over a 13-year period, a seemingly mild-mannered nurse, Malcolm Webster, set about poisoning and murdering his first wife, attempting to do the same to his second wife and moving on to a further scheme to deceive his third fiancée."  The series was written by Jeff Pope.

Christopher Scarver: Christopher J. Scarver (born July 6, 1969) is an American convicted murderer who also killed serial killer and cannibal Jeffrey Dahmer at Columbia Correctional Institution, Portage, Wisconsin, in 1994.  Scarver used a 20-inch (51 cm) metal bar he removed from a piece of exercise equipment in the prison weight room to beat Dahmer and another convicted murderer, Jesse Anderson.  Both Dahmer and Anderson died later from their injuries.  Scarver was sentenced to two further life sentences for the killings.

Malcolm Webster (murderer): Malcolm John Webster (born 18 April 1959) is an Englishman convicted of the murder of his first wife in Scotland in 1994 and the attempted murder of his second wife.  Both cases involved staged car crashes and were carried out for the life insurance money.  A police profiler labelled him a sociopath.

Daniel Pelosi: Daniel Pelosi (born August 2, 1963 in Center Moriches, New York ) is the convicted murderer of Wall Street financier Ted Ammon, the widower of Generosa Ammon.

Elias Abuelazam: Elias Abuelazam (Arabic: الياس أبو عزام‎ ‎ , Hebrew: אליאס אבו אל עזאם‎ ‎ , born August 29, 1976) is an Israeli-Arab convicted murderer, and suspect of racial serial killing and multiple stabbings.  He is suspected in a string of 18 stabbing attacks in the spring and summer of 2010 which resulted in five deaths.  Most of the alleged attacks occurred in Genesee County, Michigan (particularly in and around Flint).  Five stabbings occurred outside of Michigan: three in Leesburg, Virginia and another in Toledo, Ohio, and one in his native home in Ramla, Israel.  All of Abuelazam's alleged victims were described as "small framed" (e.g. short, thin, non-muscular) men, most of them African Americans.  During the investigation, Michigan media dubbed him "The Genesee County Serial Slasher" (or alternately "The Genesee County Serial Stabber").  Abuelazam was 6 ft and weighed 280 lb at the time of his booking.  Abuelazam has been convicted in one of the murders, that of 49-year-old Arnold Minor in Flint, Michigan which occurred on August 2, 2010.  He is currently serving a sentence of life imprisonment without the possibility of parole for that crime.  As a result, Genesee County prosecutors have announced Abuelazam will not stand trial for the other crimes in their jurisdiction, nor will authorities in Toledo or Leesburg try him.  He is currently incarcerated at Bellamy Creek Correctional Facility in Ionia, Michigan as Michigan Department of Corrections inmate number 842658.

Willie Bosket: William James "Willie" Bosket, Jr. (born December 9, 1962) is an American convicted murderer, whose numerous crimes committed while he was still a minor led to a change in New York state law, so that juveniles as young as 13 could be tried as an adult for murder and would face the same penalties.  He has been in either prison or reformatories for all but 18 months since 1971, and has spent all but 100 days of his adult life in custody.  He is currently serving a sentence of 82 years to life at Five Points Correctional Facility.

Randy Roth: Randy Roth is a convicted murderer and thief from Washington.  He was convicted of the 1991 murder of his fourth wife, Cynthia Baumgartner Roth.  He was suspected but never tried for murdering his second wife, Janis Roth, in 1981.  In both deaths he was the only witness, he claimed the activity that led to the death was the idea of his deceased wife, and the bodies were cremated as quickly as could be arranged.  He was also convicted of stealing in the form of defrauding insurers and the Social Security Administration and was sentenced to one year for theft and 50 years for first degree murder in 1992.  At least two true crime books are based on Roth's crimes, "A Rose for Her Grave" by Ann Rule and "Fatal Charm" by Carlton Smith.

Supporting paragraphs: The Widower (miniseries) Malcolm Webster (murderer)
Answer: his first wife