Etan Boritzer
Etan Boritzer( born 1950) is an American writer of children ’s literature who is best known for his book" What is God?" first published in 1989.
His best selling" What is?" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.
Boritzer gained national critical acclaim after" What is God?" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.
The other current books in the" What is?" series include
What is Love?,
What is Death?,
What is Beautiful?,
What is Funny?,
What is Right?,
What is Peace?,
What is Money?,
What is Dreaming?,
What is a Friend?,
What is True?,
What is a Family?,
What is a Feeling?"
The series is now also translated into 15 languages.
Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.
His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.
Boritzer now lives in Venice, California and maintains his publishing office there also.
He has helped numerous other authors to get published through" How to Get Your Book Published!" programs.
Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.
He is also recognized nationally as an erudite speaker on" The Teachings of the Buddha."
Marthe Blackburn
Marthe Blackburn, née Morisset (1916 - 1991) was a Canadian screenwriter from Quebec.
A television writer for Radio-Canada and later a film writer for the National Film Board of Canada, she was most noted for her collaborations with director Anne Claire Poirier.
Blackburn and Poirier were Genie Award nominees for Best Original Screenplay at the 1st Genie Awards in 1980 for "A Scream from Silence (Mourir à tue-tête)".
She was the author of "Le retour de l’âge", a short theatrical piece which was part of the collaborative feminist theatre work "La nef des sorcières" alongside pieces by Luce Guilbeault, France Théoret, Odette Gagnon, Marie-Claire Blais, Pol Pelletier and Nicole Brossard.
She was one of the co-directors of the documentary film "À qui appartient ce gage?", and had a small acting role in the 1980 film "Cordélia".
She was married to composer Maurice Blackburn, with whom she collaborated on the libretto for his opera "Une mesure de silence", and was the mother of science fiction writer Esther Rochon.
Bill Smith (footballer, born 1897)
William Thomas Smith( born 9 April 1897, date of death unknown) was an English professional footballer.
Maurice Blackburn (composer)
Joseph Albert Maurice Blackburn (22 May 1914 – 29 March 1988) was a Canadian composer, conductor, sound editor for film, and builder of string instruments.
He is known for his soundtracks for animated film.
Harry Wainwright (footballer)
Harry Wainwright( born 1899; date of death unknown) was an English footballer.
Thomas Scott (diver)
Thomas Scott( 1907- date of death unknown) was an English diver.
Harry Johnson (wrestler)
Harry Johnson( 1903- date of death unknown) was an English wrestler.
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.
Albert Thompson (footballer, born 1912)
Albert Thompson( born 1912, date of death unknown) was a Welsh footballer.
Fred Bradley (rower)
Frederick Bradley( 1908- date of death unknown) was an English rower.

Question: When did Marthe Blackburn's husband die?
Answer: 29 March 1988