Leonard Cohen RIIP: Then We Take Berlin (part VIII)

Cont

We now return to part I, and this excerpt:

• 1777 – John Bartram, American botanist and explorer (b. 1699)
• 1999 – George C. Scott, American actor, director, and producer (b. 1927)
• 2000 – Saburō Sakai, Japanese lieutenant and pilot (b. 1916)

we have still to investigate John Bartman, and the name on his wiki page that says the most:

• Thomas Say (June 27, 1787 – October 10, 1834)

Thomas means twin so "twin say".  And we have yet another expansion:

'October ...10, _, 12,_,_,15,_,17, 18(x3),19(x4), __, 21_,_,_,25(x2),26, __, 28/ Date Sequence" 

And others:

• Humphry Marshall (October 10, 1722 – November 5, 1801
• Carl Linnaeus ( 23 May 1707 – 10 January 1778
• Pehr Kalm (6 March 1716 – 16 November 1779 
• Benjamin Franklin (January 17, 1706 [O.S. January 6, 1705]^[1] – April 17, 1790)
• Philip Miller (1691 – 18 December 1771) 
• Mark Catesby (24 March 1682/83 – 23 December 1749) 
• Robert James Petre (3 June 1713 – 2 July 1742)
• George III (4 June 1738^[c] – 29 January 1820)  

And:
'October ...10(x2),_, 12,_,_,15,_,17, 18(x3),19(x4), __, 21_,_,_,25(x2),26, __, 28/ Date Sequence