Deaths come in 4

The Deaths in 2015 site lists under December 22, 21, 19:

• Derek Ezra, Baron Ezra, 96, British coal industry administrator, Chairman of the National Coal Board(1971–1982).
• Dejan Brđović, 49, Serbian volleyball player.
• Carol Burns, 68, Australian actress (Prisoner), cancer
• Chris Harris, 67, American politician, member of the Texas House of Representatives (1985–1991) andSenate (1991–2013) 

Note from their wiki pages:

• Dejan Brđović (February 21, 1966 — December 21, 2015)
• Carol Burns (22 February 1947 – 21 December 2015)
• Derek Ezra, Baron Ezra (23 February 1919 – 22 December 2015) 
• Chris Harris (February 19, 1948 – December 19, 2015)

So we havea "February 19, __, 21, 22, 23/Date Sequence" pattern-cluster in the works.   This is  strategically designed as a prompt-- for us to bridge the February 20th gap.   We do this by venturing to the days wiki page, where there are three long lists: notable events, births and deaths.  In order to limit our search we are then expected to investigates the years having 3 identical numbers at the end.  

so following the usual investigative format, and in bridging the February 20 gap, note the following:

• 1888 – Georges Bernanos, French soldier and author (d. 1948)

Georges Bernanos (20 February 1888 – 5 July 1948) 

• 1999 – Sarah Kane, English playwright (b. 1971)
• 1999 – Gene Siskel, American journalist and critic (b. 1946)
• 2000 – Anatoly Sobchak, Russian lawyer and politician, 1st Governor of Saint Petersburg (b. 1937)