Dougal MacRory, 1st of Dunollie and of Lorn

Dugall was the eldest son of King Somerled of the Hebrides. He founded the clan of MacDougalls when his father was killed in battle against the King of Scots, in 1164. Somerled was of mixed Celtic-Norse royal blood. Dugall, (Dubhgall) took over the heartland what is now called Argyll. His title being, King in the South Isles, Lord of Lorn. The surname MacDougall means Son of Dougall, the gaelic words Dubhgall, means black stranger or foreigner, so "son of black stranger" is a known expression for MacDougall.

http://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm

Chapter 9. ARGYLL

Arregaithel or Argyll was previously the kingdom of Dalriada in the west of Scotland. It was added as a province in the 10th century and at that time covered the whole western coast of Scotland as far north as Caithness. It is unclear whether the rulers of the province originally used the title Mormaer or were throughout referred to as Lord. Following the defeat of Somerled Lord of Argyll in 1164, it was nearly three centuries before James II King of Scotland created the earldom of Argyll, with Colin Campbell Lord Campbell as 1st Earl of Argyll, in 1457.

1. SOMERLED (-killed in battle 1164). Lord of Argyll. He acquired control of the Western Isles and assumed the title King of the Isles. The Chronicle of Melrose records that Somerled Lord of Argyll landed at Renfrew in 1164, after 12 years of rebellion against Malcolm IV King of Scotland, with a large army from Ireland but was defeated and killed with his son[351].

m --- of Man, illegitimate daughter of OLAV King of Man & his mistress ---. The name of Somerled´s wife is not known. The Chronicon Manniæ et Insularum records that “Olavus filius Godredi Crovan” had many concubines by whom he fathered “filios tres…Reignaldum, Lagmannum et Haraldum et filias multas”, adding that one daughter married “Sumerledo regulo Herergaildel”[352]. Somerled & his wife had five children: [ONE OF WHICH WAS DUGALD]

DUGALD, son of SOMERLED Lord of Argyll & his wife --- of Man (-after 1175). The Chronicon Manniæ et Insularum names “Dulgallum, Reginaldum, Engus et Olavum” as the four sons of “Sumerledo regulo Herergaildel” and his wife the daughter of Olav King of Man[1042]. The Obituario of Durham records that "Dusgal filius Sumerledi et Stephanus capellanus suus et Adam de Stanford" donated two gold rings to St Cuthbert in 1175[1043]. The Liber Vitæ of Durham names "Dunegal filius Sumerledi, et filii sui, Olaf et Dunechal et Raynald et Adam de Stanford. Stephanus Capellanus"[1044]. m ---. The name of Dugald’s wife is not known. Dugald & his wife had four children:

• 1. OLAF . The Liber Vitæ of Durham names "Dunegal filius Sumerledi, et filii sui, Olaf et Dunechal et Raynald et Adam de Stanford. Stephanus Capellanus"[1045].
  
• 2. DUGALD "Screech" . The Saga of Eirspennill’s Hakon Hakon’s son records that "the kings of the Hebrides were Dugald Screech and his brother Duncan, the father of John who was king afterwards…the sons of Dungal, Somerled’s son"[1046]. Malcolm IV King of Scotland with "Uhtred filio Fergi et Gilebto fratris eius et Rad filio Dunegal et Duuenaldo fratris eius" confirmed the donation of "terra de Dunroden" to Holyrood abbey by undated charter[1047].
  
• 3. DUNCAN (-[1237/48]). The Liber Vitæ of Durham names "Dunegal filius Sumerledi, et filii sui, Olaf et Dunechal et Raynald et Adam de Stanford. Stephanus Capellanus"[1048]. The Saga of Eirspennill’s Hakon Hakon’s son records that "the kings of the Hebrides were Dugald Screech and his brother Duncan, the father of John who was king afterwards…the sons of Dungal, Somerled’s son"[1049]. m ---. The name of Duncan’s wife is not known. Duncan & his wife had three children [says Cawley, but then only includes one]:
  

• a) EWEN of Argyll (-after 4 Apr [1268]). The Saga of Eirspennill’s Hakon Hakon’s son records that "the kings of the Hebrides were Dugald Screech and his brother Duncan, the father of John who was king afterwards…the sons of Dungal, Somerled’s son"[1050]. The Saga of Eirspennill’s Hakon Hakon’s son records that "John, Duncan’s son, and Dugald, Ruadri’s son" met Alexander II King of Scotland in 1248 and "endeavoured…that the king should give them the title of king over the northern part of the Hebrides"[1051]. "…Domino Ewgenio de Argadia, Domino M. avunculo nostro…" subscribed the charter dated 4 Apr "1218" (suggested redating to 1268 by the editor of the cartulary) under which "Malisius comes de Stratheryn" donated property at Abircarnich to Inchaffray[1052]. m ---. The name of Ewen’s wife is not known. Ewen & his wife had three children :
  

• i) MARY (-[28 Sep 1300/10 Oct 1303], bur London, Grey Friars Church). The Extracta ex Cronicis Scocie records the death of "Rex Mannie" and the marriage of "eius relictam, filiam comitis Ergadie Eugenii" to "Malisius comes de Stratherne", among passages dealing with events in 1268[1053]. The Liber Pluscardensis records the marriage of "regulus Manniæ…viduam…filiam domini de Arcadia" and "comes de Strathern Malisius"[1054]. "Maria Regina de Man quondam uxor domini Willelmi filii Warini" is named in the Wardrobe Accounts in Dec 1299[1055]. The deaths of “dñs Willm Fizwarryn Baro et Isabella ux sua quoda Regina Man” are recorded in Grey Friars Church, London[1056]. m firstly MAGNUS King of Man, son of OLAV King of Man & his third wife Christina of Ross (-24 Nov 1265, bur Rushen St Mary). m secondly ([1268]%29 as his fourth wife, MALISE Earl of Strathearn, son of ROBERT Earl of Strathearn & his wife --- (-[in France] [before 23 Nov] 1271, bur Dunblane). m thirdly (post nuptial dispensation 5 Apr 1281) HUGH Abernethy of that Ilk, son of --- (-[28 Jun 1291/10 Feb 1292]). m fourthly (before 10 Apr 1299) as his second wife, WILLIAM FitzWarin, son of --- (-before 1 Dec 1299, bur London, Grey Friars Church). His relationship, if any, to the FitzWarin family who is shown in UNTITLED ENGLISH NOBILITY has not yet been established. The deaths of “dñs Willm Fizwarryn Baro et Isabella ux sua quoda Regina Man” are recorded in Grey Friars Church, London[1057].
  
• ii) ALEXANDER Macdougall ). m --- Comyn, daughter of JOHN Comyn Lord of Badenoch & his first wife Eva ---. Andrew Wyntoun’s Cronykil records that "the Red Cwmyn" had four daughters, of whom the third married "Alysawndyr off Argayle" by whom she had "Jhon off Lorne…Ewyn off Lorne"[1058]. Alexander & his wife had two children:
  

• (a) JOHN . Andrew Wyntoun’s Cronykil records that "the Red Cwmyn" had four daughters, of whom the third married "Alysawndyr off Argayle" by whom she had "Jhon off Lorne…Ewyn off Lorne"[1059].
  
• (b) EWEN . Andrew Wyntoun’s Cronykil records that "the Red Cwmyn" had four daughters, of whom the third married "Alysawndyr off Argayle" by whom she had "Jhon off Lorne…Ewyn off Lorne"[1060].
  

• iii) JULIANA .
  

• 4. RAYNALD . The Liber Vitæ of Durham names "Dunegal filius Sumerledi, et filii sui, Olaf et Dunechal et Raynald et Adam de Stanford. Stephanus Capellanus"[1061]. Malcolm IV King of Scotland with "Uhtred filio Fergi et Gilebto fratris eius et Rad filio Dunegal et Duuenaldo fratris eius" confirmed the donation of "terra de Dunroden" to Holyrood abbey by undated charter[1062].
  

Dugald had one [illegitimate] son by an unknown mistress:

• 5. USPAK HAAKON . The Saga of Eirspennill’s Hakon Hakon’s son names "Uspak…who had long been with the Birchlegs" adding that "it came out that he was a son of Dungal", which from the context indicates "Dungal, Somerled’s son" who is named in the previous passage[1063]. The rather convoluted phrasing suggests that Uspak was illegitimate. m ---. The name of Uspak’s wife is not known.] Uspak & his wife had [one child]:
  

• a) RUDRI .
  

http://fmg.ac/Projects/MedLands/SCOTTISH%20NOBILITY.htm#DugaldsonSo...

The clan MacDougall has an active society:

http://www.clanmacdougall.co.uk/index.php

After his father's death, Duhghall held most of Argyll, Scotland and also islands such as the Isle of Mull, Lismore, Jura, Tiree, Coll and many others.

The Celtic christian name Dougall or Dugald, is derived from the gaelic "dubh-gail" meaning "black stranger". Duhghall's royal descent was acknowledged by the King of Norway. His son, Duncan, and grandson, Ewen, built castles to defend their dominions, including Dunstaffnage, Dunollie and Duntrune on the mainland, and Aros, Cairnburgh, Dunchonnel and Coeffin on the islands.

Dunollie, a craig rising up over seventy feet, was most likely first fortified as early as the sixth century and was to become the chief seat of the Clan.

On Death of his father Somerled,

Dougal obtained Sovereignty of Isles of: 

Mull, Coll, Tiree and Jura===
[http://www.archive.org/stream/memorialsofearlo01rogeuoft/memorialso...]

From this man sprang the MacDougals of Lome