A Norman named Hervey later married the heiress of Marbhachair and received charter for the lands of Keth from King David I in 1150. Hervey's son was made Marischal of the King of Scots in 1176. The Marischal, was custodian of the Royal regalia and was to protect the King at Parliament.
Robert the Bruce bestowed Halforest in Aberdeenshire to Robert de Keth in 1308. Here the Keiths built their castle. Sir Robert's nephew was the one to return the Bruce's heart to Melrose abbey after the Douglas's death at the hands of the Moors in Spain. The Bruce also made the office of Marischall herediatry to the Keiths in 1324 in recognition of Sir Robert de Keth, calvalry commander at the Battle of Bannockburn.
Sir William the Marischall added estates in Buchan, Kincardine and Lothian to the family by marrying the daughter of Sir Alexander Fraser, the High Chamberlain. Sir William's brother married the Cheyne heiress bringing the massive estate of Inverugie into the familly. The chief's seat was later to be a castle on the Inverugie lands.
The 3rd Lord Keith was raised to Earl Marischal in 1458. During the reformation the 7th Earl was captured and imprisoned in the Tower of London until the restoration. The King then appointed him Privy Councillor and later Lord Privy Seal as reward for his services in the Royal cause. The Earl Marischal had hidden the Honours of Scotland (Scottish crown jewels) on Keith lands for safekeeping.
The Keith family supported the Jacobite cause during the 1715 and '45 uprisings and for their part forfeited their lands.
The 9th Earl of Kintore, Governor General of South Australia from 1889 to 1895, decimated the Kintore estates. The 12th Earl was instrumental in promoting the Clan internationally and appointed a hereditary sennachie to preserve the Keith genealogy. The 13th Earl resides on the Keith Hall estate in Aberdeenshire.
(1) Sir John
Keith married, Marischal of Scotland, born about 1212, died
before 1270; married Margaret Comyn/Cumming,
born about 1217, daughter of the Earl of Buchan.
(2) Sir William Keith, born about 1236 in Humbie, Scotland, died before 1293, he accompanied King Robert's heart to the Holy Land. About 1261, he married Barbara de Seton, born about 1216. Parents of:
(3) Edward Keith of Synton, Marischal of Scotland, born about 1280 in Scotland, died 17 October 1346 in Neville, England. He married before July 1305 Isabella Synton. He married second Christian Menteith.
Keith, Grand Marischal, born in Dunottar, Kincaid, Perthshire,
Scotland, died about 1407; married
born about 1340, died about 1407. Parents of:
(5) Robert Keith, born about 1363 in Dunnotar, Kincaid, Perthshire, Scotland; married a woman of the Urquhart clan. Parents of:
Elizabeth; married first Robert Irvine, 4th Laird Drum; married secondly his brother Alexander Irvine, second 4th Laird Drum.
Dunnotar Castle, near Stonehaven, in the Grampian region, was the ancestral home of Clan Keith for three centuries, and served as the setting for Franco Zeffirelli's film "Hamlet" starring Mel Gibson.
(6) William Keith, 1st Earl of Marishal, born about 1397 in Dunnotar, Kincaid, Perthshire, Scotland, died before 16 March 1463/1464; married Mary/Marjory Hamilton. Parents of: