The first time Cochem is mentioned in a document is in 886 where it is called Villa cuchema. In 893, it is called Cuhckeme and Chuckeme. It is not recorded as Cochem until much later in history.
The first documentary mention is from 1459 but the human settlements in the zone are very old.
First Tuesday - documentary strand - was created in 1983.
The first Academy Award (Oscar) for Best Documentary was awarded in 1942.
The first feature-length documentary film is generally considered to be Robert Flaherty's Nanook of the North, released in 1922. For a good overview of documentary film history, see the link below.
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First Steps won the Oscar for Documentary - Short Subject - in 1947.
A Documentary of Life - 2012 The First Day 2-7 was released on: USA: 29 September 2012
The first song was The Minstrel from Gault. It was performed by Richie Havens.
The Beyonce documentary entitled 'Life Is but a Dream' first aired February 16, 2013 on HBO. It had 1.8 million viewers which set the HBO record for most watched documentary.
If what you mean is the Shabbat (Sabbath) the first mention I could find was (Exodus 16:23)
Juliet was the first one to mention marriage during the balcony scene.
The first documentary evidence is from a competition at Islington cricket ground in 1794. The lowlands of Scotland is regarded as the birth place of triple jumping although the first documentary evidence is from 1797.