Alpin MacEochaid King of Scots (Dalriada)

  General Notes:

http://www.clanmacfarlanegenealogy.info/genealogy/TNGWebsite/getperson.php?personID=I4460&tree=CC

1 - Often said to have married a Pictish Princess, however MacDonald source claims it was his father who married the Princess.

2 - The Dalriad Monarchy remained in the line of Fergus, until about 700 AD when owing to the military ability of Fearcher Fada or Fearcher the Tall, whose Capital had been at Dunolly near Oban, it passed over into the line of Loarn, thus laying a foundation for the future eminence in Scottish history of the lords of that district. Subsequently, it passed between the lines of Fergus and of Loarn several times, until 834 AD, it was held by Aidan (Hugh) of the line of Fergus, whose son Kenneth MacAlpine, ancestor of Somerled, the lord of the Isles, became King of the whole Pictish race, within the present Scotland.
Kenneth McAlpine succeded about 840-50 AD to the Pictish throne , in virtue of succession through his mother - succession in the Pictish system being in the female line, that is, a man succeeded to the throne, because his mother was the previous King's sister or daughter. Kenneth thus became lord of the territory between Caithness and Edinburgh. [this makes it more likely to have been Kenneth's father who married the Pictish princess]
[ http://skyways.lib.ks.us/genweb/republic/PatAdams/research/argyllshire/ch1.html ]

3 - Alpin 68th Fabulous, 28th authentic, King of Scotland, slain in Galloway, a.d. 841 by Brudus, King of the Picts, from whom he had wrested the scepter.
[http://www.mackinnon.org/mackinnon-chiefs.html#XXIV]

4 - Siol Alpein, a group of ancient clans each tracing its decent back to King Alpin. The clans in this confederation are the MacGregors, the MacNabs, MacAulays, the MacPhies, Grants, MacKinnons and MacQuarries.
In 1671, a bond of manrent or friendship was entered into between Lachlan Mor and James MacGregor of that ilk, which mentions that they "are descended lawfully fra two breethren of auld descent." Presumably this refers to Doungallus and Findanus, grandson and great-grandson of King Alpin.
[http://www.mackinnon.org/mackinnon-short-history.html]

Alpin married Unuisticc Princess of the Picts.