died in 1206, and was succeeded by his son David,
who died in 1214, when his brother John became Earl of Orkney and
Caithness. Fordun tells us that King William made a treaty of peace
with him in that year, and took his daughter as a hostage, but the
burning of Bishop Adam in 1222 brought King Alexander II down upon
Earl John, who was obliged to give up part of his lands into the hands
of the king, which, however, he redeemed the following year by paying
a large sum of money, and by his death in 1231 the line of Paul again
came to an end.

"In 1232, we find Magnus, son of Gillebride, Earl of Angus, called
Earl of Caithness, and the earldom remained in this family till
between 1320 and 1329, when Magnus Earl of Orkney and Caithness, died;
but during this time it is clear that these earls only possessed one
half of Caithness and the other half appears in the possession of the
De Moravia family, for Freskin, Lord of Duffus, who married Johanna,
who possessed Strathnaver in her own right, and died before 1269, had
two daughters, Mary, married to Sir Reginald Cheyne, and Christian,
married to William de Fedrett; and each of these daughters had one
fourth part of Caithness, for William de Fedrett resigns[11] his
fourth to Sir Reginald Cheyne,[12] who then appears in possession
of one-half of Caithness (Chart. of Moray; Robertson's Index). These
daughters probably inherited the half of Caithness through their
mother Johanna. Gillebride[13] having called one of his sons by the
Norwegian name of Magnus, indicates that he had a Norwegian mother.
This is clear from his also becoming Earl of Orkney, which the king of
Scots could not have given him. Gillebride died in[14] 1200, so that
Magnus must have been born before that date, and about the time of
Earl Harald Ungi, who had half of Caithness, and died in 1198. Magnus
is a name peculiar to this line, as the great Earl Magnus belonged to
it, and Harald Ungi had a brother Magnus. The probability is that the
half of Caithness which belonged to the Angus family was that half
usually possessed by the earls of the line of Erlend,[15] and was
given by King Alexander with the title of Earl to Magnus, as the son
of one of Earl Harald Ungi's sisters, while Johanna, through whom the
Moray family inherited the other half, was, as indicated by her name,
the daughter of John, Earl of Caithness of the line of Paul, who had
been kept by the king as a hostage, and given in marriage to Freskin
de