The Walker related in the second paragraph appears to be James M Walker (66) of Virginia. He was quite affluent and a slave owner. see 1860 census listing:
James M Walker
Age in 1860: 66
Birth Year: abt 1794
Birthplace: Virginia
Home in 1860: Sni a bar, Jackson, Missouri
Post Office: Blue Springs
Household Members:
Name Age
James M Walker 66
Polly Walker 58
Zachariah Walker 22
John Carvell 12
He had multiple purchases in the BLM records in Jackson Co of substantial acreage.
James M Walker 7 Sep 1838 5th PM Missouri Jackson 49-N 31-W 24
James M Walker 7 Sep 1838 5th PM Missouri Jackson 49-N 31-W 24
James M Walker 1 May 1843 5th PM Missouri Jackson 49-N 30-W 19
James M Walker 1 May 1843 5th PM Missouri Jackson 49-N 30-W 19
James M Walker 1 May 1843 5th PM Missouri Jackson 49-N 30-W 19
James M Walker 1 May 1843 5th PM Missouri Jackson 49-N 30-W 30
James M Walker 1 May 1843 5th PM Missouri Jackson 49-N 30-W 31
James M Walker 1 Nov 1848 5th PM Missouri Jackson 49-N 31-W 24
James M Walker 15 Feb 1851 5th PM Missouri Jackson 49-N 30-W 18
James M Walker 15 Feb 1851 5th PM Missouri Jackson 47-N 31-W 24
James M Walker 15 Feb 1851 5th PM Missouri Jackson 49-N 30-W 18
James M Walker 15 Feb 1851 5th PM Missouri Jackson 49-N 30-W 18
James M Walker 15 Feb 1851 5th PM Missouri Jackson 47-N 30-W 7
James M Walker 15 Feb 1851 5th PM Missouri Jackson 49-N 30-W 7
James M Walker 15 Feb 1851 5th PM Missouri Jackson 49-N 31-W 24
Using the 1877 map overlay this puts Walkers holdings around I-70 and State Hwy 7 north to near Rt 7 and Duncan Rd. just east of Burr Oak conservation area.
Using the map Fire Prairie Creek is easily identified. Just north of Buckner(Buckner Hill) The next definitive locations are the state road to Lexington (current US 24) the Hugh's place and Mrs Garrison's
Hughes is this one I believe:
Name: Wm H Hughes
Age in 1860: 48
Birth Year: abt 1812
Birthplace: Kentucky
Home in 1860: Fort Osage, Jackson, Missouri
Post Office: Sibley
Household Members:
Name Age
Wm H Hughes 48
Mary C Hughes 16
Martha S Hughes 14
Mary W Hughes 67
Henry Mcdonough 16
Garrison is here:
A F Garrison
Age in 1860: 52
Birth Year: abt 1808
Birthplace: New Jersey
Home in 1860: Fort Osage, Jackson, Missouri
Post Office: Sibley
Household Members:
Name Age
A F Garrison 52
Armilda Garrison 36
S W Hudson 18
Sarah C Miller 15
William H Peak 2
Given this information I think he must have run into Quantrill et al between Buckner and Sibley somewhere near current Cnty Hiway 8 south of Sibley. The confusing part of the report is when he reports entering Sibley from the North and Northeast. I suspect he was moving N and NE from near Buckner Hill.
John R