Question: What year did the person whose disappearance gave Sandra Felgueiras her best known interview disappear?

Context articles: Tempore
Eugene V. Debs Award
Teddybjörnen Fredriksson
Disappearance of Genette Tate
Sandra Felgueiras
Disappearance of Madeleine McCann
Polymath
Methuselah (bond)
Simon of Trent
Life Assurance Act 1774

Tempore (abbreviated to temp.)
 in historical literature denotes a period during which a person whose exact lifespan is unknown was known to have been alive or active, or some other date which is not exactly known, usually given as the reign of a monarch.
 The word is Latin, being the ablative singular of the noun "tempus, temporis", "time", thus meaning "in the time (of)".
 It should be followed by a name in the genitive case.
 The theoretical full form might be "vixit tempore Regis Henrici Primi" ("he/she lived in the time of King Henry the First") (i.e. 1100-1135).
 The best known occurrence is in the Domesday Book of 1086, where the phrase "Tempore Regis Eduardi" (nominative case "Rex Eduardus"), meaning "in the time of King Edward (the Confessor)" appears in the entry for almost every manor, abbreviated as TRE.
 It thus signifies the date range 1042–1066.
 It is useful in historical literature because the names of many historical persons appear in surviving documents only in royal charters, possibly as witnesses, which can be dated to the reign of the originating monarch.
The Eugene V. Debs Award is an award accorded by the Eugene V. Debs Foundation, in Terre Haute, Indiana, each year since 1965, honoring a person whose work has been consistent with the spirit, values, and legacy of Eugene V. Debs and who has contributed to the advancement of the causes of industrial unionism, social justice, or world peace.
"Teddybjörnen Fredriksson" ("Fredriksson, the Teddy bear") is a Swedish children's song by Lasse Berghagen who wrote it in 1969 to his 3-year-old daughter Malin.
 It's one of Berghagen's most famous songs.
 Many Swedish schools and pre-schools sing it and has been voted as the most popular children's song.
 This song is about a person whose father gave him a teddy bear as birthday present when he was 4 years old and when he was married and got a 4-year-old daughter, he gave her a teddy bear.
 This song made Berghagen famous for children, and the real "Teddy bear Fredriksson" is locked in a booth at Leksaksmuseet in Stockholm.
Genette Louise Tate (5 May 1965 – disappeared 19 August 1978) is an English girl whose disappearance became a missing person case when she went missing at age 13 while delivering newspapers in Aylesbeare, Devon, England.
Sandra Felgueiras is a Portuguese TV Presenter and journalist, she is best known for interviewing Kate and Gerry McCan about the Disappearance of Madeleine McCann.
Madeleine Beth McCann (born 12 May 2003) disappeared on the evening of 3 May 2007 from her bed in a holiday apartment in Praia da Luz, a resort in the Algarve region of Portugal, sparking what one newspaper called "the most heavily reported missing-person case in modern history".
 Her whereabouts remain unknown.
A polymath (Greek: πολυμαθής , "polymathēs ", "having learned much") is a person whose expertise spans a significant number of different subject areas; such a person is known to draw on complex bodies of knowledge to solve specific problems.
The Methuselah is a type of bond with a 50-year maturity.
 The term is a reference to Methuselah, the oldest person whose age is mentioned in the Hebrew Bible.
 The issuance in Methuselahs has been increasing in recent years due to demand for longer-dated assets from pension plans, particularly in France and the United Kingdom.
 Issuance of Methuselahs in the United States has been limited, however, as the U.S. Treasury does not currently issue Treasuries with maturities beyond 30 years, which would serve as a reference level for any corporate issuance.
Simon of Trent (German: "Simon Unverdorben ("Simon Immaculate")" ; Italian: "Simonino di Trento" ); also known as Simeon; (1472 – March 21, 1475) was a boy from the city of Trent, Prince-Bishopric of Trent, whose disappearance and murder was blamed on the leaders of the city's Jewish community, based on his dead body allegedly being found in the cellar of a Jewish family's house.
The Life Assurance Act 1774 (14 Geo.
 3 c.48, also known as the Gambling Act 1774) was an Act of Parliament of the Parliament of Great Britain, which received the Royal Assent on 20 April 1774.
 The Act prevented the abuse of the life insurance system to evade gambling laws.
 It was extended to Ireland by the Life Insurance (Ireland) Act 1866, and is still in force.
 Prior to the Act, it was legally possible for any person to take out life insurance on any other person, regardless of whether or not the beneficiary of the policy had any legitimate interest in the person whose life was insured.
 As such, the system of life insurance provided a legal loophole for a form of gambling: an insurance policy could be taken out on an unrelated third party, stipulating whether or not they would die before a set date, and relying on chance to determine if the "insurer" or "policy-holder" would profit by this event.