Alberto Canas Escalante and Francis Matthews RIIIIP: Escalating Frankness

The Deaths in 2014 site lists under June 14:

• Alberto Cañas Escalante, 94, Costa Rican writer, journalist and politician, MPfor San José (1962–1966, 1994–1998), complications following surgery

• Francis Matthews, 86, English film and television actor (Captain Scarlet and the Mysterons, The Revenge of Frankenstein, Dracula: Prince of Darkness)

The two share something in common, butt unless you read to the end, you'll never know.  

Note the following actor from the wiki page of Dracula: Prince of Darkness:

• Terence Fisher (23 February 1904 – 18 June 1980)
• Anthony Nelson Keys (13 November 1911 - 19 March 1985)

First of all, June 18 is tomorrow, and as to the date of death of Anthony Keys, well read on.

Note from the Revenge of Frankenstein wiki page:

• The Revenge of Frankenstein is a 1958 British horror film made byHammer Film Productions. Directed by Terence Fisher, the film starsPeter Cushing, Francis Matthews,Michael Gwynn and Eunice Gayson.

Note the following: 

• Peter Wilton Cushing, OBE (26 May 1913 – 11 August 1994)
• Eunice Gayson (born Eunice Sargaison, 17 March 1928)

Wikipedia claims there to be 4 notable persons named Francis Matthews, note the following: 

Francis Matthews may refer to:

• Francis Matthews (actor), British actor

• Francis P. Matthews, 49th United States Secretary of the Navy and the 8th Supreme Knight of the Knights of Columbus

• Francis Matthews (British Army officer), (1903-1976) British Army general

• Fran Matthews, baseball player

Two stand out due to the following info from their wiki pages:

• Francis Patrick Matthews (March 15, 1887 – October 18, 1952)
• Francis Oliver "Fran" Matthews (November 2, 1916 – August 24, 1999) 

Oh and finally, back to Alberto, note the following from his wiki page: 

• Alberto Cañas Escalante (16 March 1920 – 14 June 2014) 

So going back to all the dates highlighted in green, we get a "March 14, 15, 16, 17/ Date Sequence" pattern-cluster, and since we have a March 19, we were one off from having a much larger cluster.