Recount (Part 4)

Recently added to The Deaths in 2018 site is:

Ryu Matsumoto, 67, Japanese politician, Minister of Environment (2010–2011), lung cancer.

• Ryu Matsumoto (May 17, 1951 – July 21, 2018)

 And note from yesterdays part 2:

• Martin O'Donoghue (13 May 1933- 20 July 2018) 
• Jonathan D. "Jon" Schnepp (May 16, 1967 – July 19, 2018) 
• Carlos Aldunate Lyon (16 May 1916 – 18 July 2018) 
• Saait Maajiet (17 May 1952 – 17 July 2018) 
• And May 16 is also the birthday of Rob MacGregor, hence we have a “May 16(x3)” pattern-cluster... and a “May 13, ..., __, 16 (x3), 17/Date Sequence” pattern-cluster. 

And so the cluster expands:

  “May 13, ..., __, 16 (x3), 17(x2)/Date Sequence” pattern-cluster.