Sir Robert Campbell, 9th Laird, 3rd Baronet of Glenorchy - Is this Correct?

Men can sire children up to their death. Don’t know what the issue is?

Some Research nicely sourced:
https://thepeerage.com/p15040.htm#i150399

Sir Robert Campbell of Glenorchy, 3rd Bt.1
M, #150399, b. 1575, d. 17 November 1657
Last Edited=6 Jul 2014
Consanguinity Index=1.3%
Sir Robert Campbell of Glenorchy, 3rd Bt. was born in 1575 at Glenorchy, Argyllshire, Scotland.1,2 He was the son of Sir Duncan Campbell of Glenorchy, 1st Bt. and Lady Jean Stewart.1 A contract for the marriage of Sir Robert Campbell of Glenorchy, 3rd Bt. and Isabel Macintosh was signed on 16 December 1605.1,3 He died on 17 November 1657.1,2
He was also known as Robert Campbell of Glenfalloch.3 He held the office of Member of Parliament (M.P.) for Argyllshire [Scotland] between 1639 and 1641.1 He succeeded as the 3rd Baronet Campbell, of Glenorchy, co. Perth [N.S., 1625] on 6 September 1640.1 He held the office of Member of Parliament (M.P.) for Argyllshire [Scotland] from 1643 to 1644.1 He held the office of Member of Parliament (M.P.) for Argyllshire [Scotland] between 1644 and 1649.1
Children of Sir Robert Campbell of Glenorchy, 3rd Bt. and Isabel Macintosh
Agnes Campbell+4
Robert Campbell3
Mary Campbell3
Beatrix Campbell3
Katherine Campbell3
Jean Campbell+3 d. a 1665
James Campbell2
Duncan Campbell b. c 1608, d. 16 Aug 1630
Margaret Campbell+4 b. c 1609
Julia Campbell3 b. c 1611
Sir John Campbell of Glenorchy, 4th Bt.+1 b. c 1615, d. b Jun 1677
Colin Campbell, 1st of Mochaster+5 b. 24 Jul 1616, d. 22 Oct 1668
Isobel Campbell+6 b. c 1617
William Campbell of Glenfalloch+7 b. c 1621, d. Sep 1648
Alexander Campbell, 1st of Lochdochart b. 1627
Duncan Campbell, 1st of Auchlyne+3 b. 1631, d. 24 Feb 1703

Citations
[S15] George Edward Cokayne, editor, The Complete Baronetage, 5 volumes (no date (c. 1900); reprint, Gloucester, U.K.: Alan Sutton Publishing, 1983), volume II, page 283. Hereinafter cited as The Complete Baronetage.
[S6286] Clan MacFarlane and associated clans genealogy, online http://www.clanmacfarlanegenealogy.info. Hereinafter cited as Clan MacFarlane.
[S37] BP2003 volume 1, page 494. See link for full details for this source. Hereinafter cited as. [S37]
[S37] BP2003. [S37]
[S6] G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume II, page 294. Hereinafter cited as The Complete Peerage.
[S4687] Richard Borthwick, "re: Campbell Family," e-mail message to Darryl Roger LUNDY (101053), 22 June 2010. Hereinafter cited as "re: Campbell Family."
[S6] Cokayne, and others, The Complete Peerage, volume II, page 296.

All of the above citations should have more accurate DOB/DOD dates.

ABOUT SON JAMES:

James Campbell is the son of Sir Robert Campbell of Glenorchy, 3rd Bt. and Isabel Macintosh.1
Citations
[S6286] Clan MacFarlane and associated clans genealogy, online http://www.clanmacfarlanegenealogy.info. Hereinafter cited as Clan MacFarlane.

or try:
http://www.irishgenealogy.com/campbell.htm

Hope that helps.
J