Keith, Earl Marischal of Scotland

References:

KINTORE in [Burkes Peerage]
MARISCHAL in [Scots Peerage]

A Historical and Authentic Account of the Ancient and Noble family of Keith, P. Buchan, Peterhead, 1820, [Aberdeen FHS] RR.
Sources yet to be consulted:
- MARISCHAL in [Complete Peerage]

Of the family Keith, hereditary Marischals of Scotland:

Sir William Keith (and here),
Marischal of Scotland 1354,
mar Margaret Fraser [descendant of David I, King of Scotland and of Henry I]
think fl at time of Battle of Harlaw 1411,
had issue:

Sir Robert Keith, Marischal of Scotland,
died in the lifetime of his father, having had issue:
1. William Keith, 1st Earl Marischal,
  cr pre-1458, died pre-1476, having had issue:
  1. William Keith, 2nd Earl Marischal,
    had issue, ancestor of the Earls Marischal, including:
    1. George Keith, 5th Earl Marischal (NOT 4th),
      founded Marischal College, Aberdeen 1593.
  2. Egidia de Keith,
    mar James Forbes, 2nd Baron Forbes and had issue.
Sir Alexander Keith (and here), of Grandown,
mar Marjory Stuart [dau of Robert II, King of Scotland and descendant of Henry I]
and had issue:
1. Christina Keith, mar Sir Patrick Ogilvy and had issue:
  1. Margaret Ogilvy, mar Sir John Oliphant and had issue.

[Ms.D], quoted in [Skene, 1887], says that Adam Skene, 5th Laird of Skene, mar Janet, "dau of Earl Marischal", shortly before the Battle of Harlaw, 1411 (in which Skene supported his father-in-law). This must be the dau of Sir William Keith and Margaret Fraser, though there is as yet no confirmation of this from the Keith side:

Janet Keith,
mar Adam Skene, 5th Laird of Skene [died 1411] and had issue.

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