The Alpins are Earls of Ardmor
The ancestral home is Caer Alpin which is in the north of the mainland of Dael Riata. It lies on a rocky outcrop on the coast where the river Ard meets the inner sea.
The current (7th) Earl is Sean Alpin.
He is 72 years old (born 702), and is currently a widower. He was married to Ealasaid Riata, his cousin and the sister of the 19th Duke of Glasholm, for thirty-nine years before she died when the old Queen was captured at the start of the civil war (in 754). He has four surviving children and a number of grandchildren.
Sean Alpin became the Earl at the age of 2, and was raised in Dalcot and then Dalreoch as a ward of his maternal uncle the 18th Duke of Glasholm. He was well tutored, and his bannermen ran the Earldom until he was married in 716. His marriage to Ealasaid was a love match, and despite the 18th Duke heavily discouraging the union it bore fruit, although tragedy struck within a month of his first son Uilleam being born. At the time many feared that the Alpin's were cursed, the Earl's father and his four elder brothers all having being lost at sea when their new flagship failed to return, despite there being no reported storms or wreckage found. It was rumoured at the time that a gilruary squadron had sunk the Alpin's ship. Although this was strenously denied, and the Earl of Duffjord fought several duels about it.
Caer Alpin is unusual in the seats of the great nobles in that it isn't in the main town/city of their realm. The main town is the port Nordhaven, sited on the north coast of the mainland of Dael Riata. It has a population of about 6,000 and is a ready stopover and resting place for those venturing from the inner sea round the cape to the open ocean to the East of Dael Riata.
There are silver and gold deposits in the mountains, lots of sheep on the hills and a steady income from farming the land, and passing trade from the East. By far the bulk of the population are involved in rural activities, there are villages every couple of miles over most of the coastal areas and up the river Ard until the mountains proper. Overall there are about 50,000 people in Ardmor.
The Earl is the oldest of the great nobles. He remembers the reign of Alasdair IV (specifically the turmoil in the regency and its immediate aftermath that spanned the first twelve years of his life, and the old King's death at the hands of nobles of Bernicia when he attempted to march south to claim that throne on the death of his brother in law Harold VIII of Bernicia. The Earl was with the army and was lucky to have been in the rear when the ambush was sprung. Many of the great nobles fell that day, as well as the smaller folk that made up the army.
Queen Caoimhe was nine when her father died, and as one of the few surviving great nobles the Earl was part of the council of regents. There was discussion then about the succession, and securing the throne with the Queen's marriage to one of the great nobles, but none could agree who it should be. The Earl aligned with the fourth Earl of Uisdean and the 7th Earl of Beatham to maintain stability. His wife acted as Matron and looked after the Queen's welfare. This worked until the Queen grew old enough to assert her own authority and became enamoured by a suspicious Skyssian merchant. Shortly after she gave birth to the young King Caoimhe confided in Ealasaid that she wanted to marry the Skyssian and make him prince consort.
It was with great regret that the Earl acted, but it was necessary to ensure the integrity of the kingdom. In the years that followed the Earl spent most of it either as regent, or as an adviser to the regent. He has made a number of unpopular decisions, but each for the good of the kingdom. He knows that he was unpopular, but that is a price he has been happy to pay, because the young King is all the stronger for it, and has been well tuaght, and well advised. He won't make the mistakes his mother or his grandfather made.
Still, it would be nice if he showed some appreciation for the sacrifices that the Earl made on the young King's behalf.