Exposition of the Old and New Testament, by John Gill, [1746-63], at sacred-texts.com
Agrees with various passages in the second book of Samuel; Ch1 20:1 with Sa2 11:1 and Ch1 20:2 with Sa2 12:30 and the rest, to the end of it, with Sa2 21:15. What differences there are, are observed in the notes on those passages, which see. Also see Ch1 21:1.
See Gill on Ch1 20:1, Sa2 11:1, Ch1 20:2, Sa2 12:30, Sa2 21:15, and Ch1 21:1.