| mother = [[Ragnhildis Olafsdottir |Ragnhildr Óláfsdóttir]]

'''Dubgall mac Somairle''' (died 1175) was an apparent [[King of the Isles]].{{#tag:ref|Since the 1980s, academics have accorded Dubgall various personal names in English secondary sources: ''Dougal'',<ref>[[#H1|Holton (2017)]]; [[#R9|Rixson (2001)]]; [[#O8|Oram, RD (1988)]]; [[#C4|Cowan, EJ (1982)]]; [[#B17|Barrow (1981)]].</ref> ''Dougall'',<ref>[[#W6|Woolf (2013)]]; [[#R8|Raven (2005b)]]; [[#B2|Barrow (2004)]]; [[#T6|Tabraham (2004)]]; [[#R1|Rollason (2003)]].</ref> ''Dubgall'',<ref>[[#D3|Downham (2013)]]; [[#B15|Beuermann (2012)]]; [[#B5|Beuermann (2010)]]; [[#M4|McDonald, RA (2007b)]]; [[#F1|Forte; Oram; Pedersen (2005)]]; [[#P4|Power (2005)]]; [[#W4|Woolf (2004)]]; [[#O3|Oram, RD (2000)]]; [[#S1|Sellar (2000)]].</ref> ''Dubhgall'',<ref>[[#B16|Barrow (2006)]]; [[#F1|Forte; Oram; Pedersen (2005)]]; [[#B2|Barrow (2004)]]; [[#T6|Tabraham (2004)]]; [[#M9|McDonald, A (1995)]]; [[#M33|McDonald, RA (1995)]]; [[#B17|Barrow (1981)]].</ref> ''Dubhghall'',<ref>[[#M10|MacGregor, M (2014)]]; [[#C3|Coira (2012)]]; [[#W3|Woolf (2007)]]; [[#B12|Brown (2004)]]; [[#M5|MacGregor, M (2000)]]; [[#M11|MacGregor, MDW (1989)]].</ref> ''Dufgall'',<ref>[[#M13|McDonald, RA (2012)]]; [[#W2|Williams, G (2007)]].</ref> ''Dugal'',<ref>[[#M9|McDonald, A (1995)]].</ref> ''Dugald'',<ref>[[#H1|Holton (2017)]]; [[#B20|Beuermann (2014)]]; [[#C9|Cameron (2014)]]; [[#A14|Addyman; Oram (2012)]]; [[#O2|Oram, RD (2011)]]; [[#S20|Sellar (2011)]]; [[#K2|Kirby; Alexander; Anderson et al. (2009)]]; [[#W2|Williams, G (2007)]]; [[#M3|McAndrew (2006)]]; [[#F4|Fisher (2005)]]; [[#R2|Raven (2005a)]]; [[#B13|Bridgland (2004)]]; [[#B12|Brown (2004)]]; [[#M18|McDonald, RA (2004)]]; [[#S4|Sellar (2004a)]]; [[#S5|Sellar (2004b)]]; [[#S1|Sellar (2000)]]; [[#M1|McDonald, RA (1997)]]; [[#R5|Roberts (1997)]]; [[#D15|Duncan (1996)]]; [[#W11|Watts (1994)]]; [[#B10|Barrow (1992)]]; [[#M31|McDonald; McLean (1992)]]; [[#C2|Cowan, EJ (1990)]]; [[#O8|Oram, RD (1988)]]; [[#S15|Scott (1988)]]; [[#A17|Alcock; Alcock (1987)]]; [[#A18|''Argyll: An Inventory of the Monuments'' (1982)]]; [[#B1|Barrow (1980)]].</ref> ''Dugall'',<ref>[[#A14|Addyman; Oram (2012)]]; [[#D18|Dalglish (2003)]]; [[#R5|Roberts (1997)]]; [[#M31|McDonald; McLean (1992)]]; [[#M26|Munro; Munro (1986)]].</ref> ''Duggáll'',<ref>[[#P4|Power (2005)]].</ref> and ''Dungal''.<ref>[[#M2|Moore; Rollason; Wareham (2007)]].</ref> Likewise, academics have accorded Dubgall various [[patronym]]s in English secondary sources: ''Dubgall mac Somairle'',<ref>[[#O3|Oram, RD (2000)]].</ref> ''Dubgall mac Sumairlid'',<ref name="F1">[[#F1|Forte; Oram; Pedersen (2005)]].</ref> ''Dubhgall mac Somhairle'',<ref name="M19">[[#M19|Murray (2005)]].</ref> ''Dubhgall mac Somhairlidh'',<ref name="F1"/> ''Dugald mac Somerled'',<ref>[[#R5|Roberts (1997)]]; [[#C2|Cowan, EJ (1990)]].</ref> and ''Dugald MacSorley''.<ref>[[#B13|Bridgland (2004)]].</ref>|group=note}} He was a son of [[Somairle mac Gilla Brigte]] and [[Ragnhildis Olafsdottir|Ragnhildr Óláfsdóttir]]. Dubgall was a leading figure of [[Clann Somairle]], and the [[eponymous]] ancestor of [[Clann Dubgaill]]. Dubgall's career is obscure, and little is certain of his life.

Dubgall was a son of [[Somairle mac Gilla Brigte]]<ref>[[#H1|Holton (2017)]] p. viii fig. 2; [[#P1|Petre (2014)]] p. 268 tab.; [[#O2|Oram, RD (2011)]] pp. xvi tab. 5, xvii tab. 6; [[#M4|McDonald, RA (2007b)]] p. 27 tab. 2; [[#W2|Williams, G (2007)]] p. 141 ill. 14; [[#F4|Fisher (2005)]] p. 86 fig. 5.2; [[#P4|Power (2005)]] p. 33 tab.; [[#R8|Raven (2005b)]] fig. 13; [[#B12|Brown (2004)]] p. 77 fig. 4.1; [[#S1|Sellar (2000)]] pp. 192 tab. i, 194 tab. ii; [[#M1|McDonald, RA (1997)]] p. 257 tab. genealogical tree i; [[#R5|Roberts (1997)]] p. 99 fig. 5.2; [[#R10|Rixson (1982)]] p. 14 fig. 1; [[#D1|Duncan; Brown (1956–1957)]] pp. 196–197 tab.</ref> and [[Ragnhildis Olafsdottir |Ragnhildr Óláfsdóttir]].<ref>[[#W2|Williams, G (2007)]] p. 141 ill. 14; [[#P4|Power (2005)]] p. 33 tab.; [[#B12|Brown (2004)]] p. 77 fig. 4.1; [[#S1|Sellar (2000)]] pp. 192 tab. i, 194 tab. ii.</ref> Somairle's familial origins are obscure, although he was almost certainly of [[Norse-Gaelic]] ancestry.<ref>[[#M9|McDonald, A (1995)]] p. 206.</ref> Ragnhildr was a daughter of [[Óláfr Guðrøðarson (died 1153)|Óláfr Guðrøðarson, King of the Isles]].<ref>[[#W6|Woolf (2013)]] p. 3; [[#M13|McDonald, RA (2012)]] p. 161; [[#W2|Williams, G (2007)]] p. 141 ill. 14; [[#B12|Brown (2004)]] p. 77 fig. 4.1; [[#S5|Sellar (2004b)]]; [[#S1|Sellar (2000)]] pp. 191, 192 tab. ii; [[#R5|Roberts (1997)]] p. 94 fig. 5.1; [[#M9|McDonald, A (1995)]] p. 206; [[#C4|Cowan, EJ (1982)]] p. 32 tab.</ref> The union of Somairle and Ragnhildr may date to about 1140.<ref>[[#O2|Oram, RD (2011)]] p. 88; [[#O9|Oram, R (2004)]] p. 118; [[#M8|McDonald, RA (2000)]] p. 175 n. 55; [[#M1|McDonald, RA (1997)]] p. 45; [[#A2|Anderson (1922)]] p. 255 n. 1.</ref> According to the thirteenth- to fourteenth-century ''[[Chronicle of Mann]]'', the couple had several sons: Dubgall, [[Ragnall mac Somairle|Ragnall]], [[Aongus mac Somairle|Aongus]], and Amlaíb.<ref>[[#M34|McDonald, RA (2019)]] p. 63; [[#M13|McDonald, RA (2012)]] p. 182 n. 168; [[#M4|McDonald, RA (2007b)]] p. 116; [[#A2|Anderson (1922)]] p. 137; [[#M7|Munch; Goss (1874a)]] pp. 60–61.</ref> There is reason to suspect that Dubgall was the eldest of these sons. Certainly, near contemporary sources such as the chronicle<ref>[[#S1|Sellar (2000)]] p. 199; [[#A2|Anderson (1922)]] p. 137; [[#M7|Munch; Goss (1874a)]] pp. 60–61.</ref> and the thirteenth-century ''[[Orkneyinga saga]]'' list his name before those of his brothers.<ref>[[#J3|Jennings; Kruse (2009)]] p. 132; [[#S1|Sellar (2000)]] p. 199; [[#M1|McDonald, RA (1997)]] p. 71; [[#A2|Anderson (1922)]] p. 255 n. 1; [[#V2|Vigfusson (1887a)]] p. 210 ch. 110; [[#A3|Anderson; Hjaltalin; Goudie (1873)]] p. 181 ch. 104; [[#F3|''Flateyjarbok'' (1862)]] p. 508 ch. 439.</ref> Dubgall's name is [[Gaelic languages|Gaelic]].<ref>[[#M18|McDonald, RA (2004)]] p. 186; [[#M1|McDonald, RA (1997)]] p. 140.</ref> The mixture of Gaelic and Scandinavian names borne by Somairle and his sons appears to exemplify the hybrid Norse-Gaelic milieu of the Isles.<ref>[[#M34|McDonald, RA (2019)]] p. 33; [[#B16|Barrow (2006)]] p. 143; [[#M18|McDonald, RA (2004)]] p. 186; [[#M1|McDonald, RA (1997)]] p. 140.</ref>{{#tag:ref|The Gaelic personal name {{lang|mga|Dubgall}} is derived from the word elements {{lang|mga|dub}} and {{lang|mga|Gall}},<ref>[[#O7|Ó Cuív (1988)]] pp. 82–83.</ref> and means "dark foreigner"<ref>[[#D12|Downham (2007)]] p. 30 n. 106.</ref> or "dark stranger".<ref>[[#O6|Ó Corráin; Maguire (1981)]] p. 79.</ref> The Gaelic {{lang|mga|Somairle}} is a [[Gaelicisation]] of the Old Norse {{lang|non|Sumarliði}}.<ref>[[#B15|Beuermann (2012)]] p. 3.</ref>|group=note}} The marriage between Somairle and Ragnhildr had severe repercussions on the later history of the Isles, as it gave Somairle's descendants<ref name="royalclaim">[[#B15|Beuermann (2012)]] p. 5; [[#B5|Beuermann (2010)]] p. 102; [[#W2|Williams, G (2007)]] p. 145; [[#W1|Woolf (2005)]]; [[#B12|Brown (2004)]] p. 70; [[#R9|Rixson (2001)]] p. 85.</ref>—[[Clann Somairle]]<ref>[[#H1|Holton (2017)]] p. 116; [[#M20|MacDonald (2013)]] p. 6; [[#B14|Breen; Forsythe; Raven et al. (2010)]] p. 168; [[#M4|McDonald, RA (2007b)]] p. 111; [[#B19|Broun (2005)]] p. 95; [[#W1|Woolf (2005)]]; [[#B13|Bridgland (2004)]] p. 86; [[#C5|Caldwell (2004)]] p. 71; [[#M18|McDonald, RA (2004)]]; [[#W9|Woolf (2003)]] p. 175; [[#M27|MacGregor, M (2001)]]; [[#M5|MacGregor, M (2000)]] p. 131; [[#B9|Bartlett (1999)]] p. 823; [[#R5|Roberts (1997)]] p. 100; [[#M9|McDonald, A (1995)]] p. 206; [[#C2|Cowan, EJ (1990)]] p. 109.</ref>—a claim to the kingship by way of Ragnhildr's royal descent.<ref name="royalclaim"/>{{#tag:ref|Although the ''Chronicle of Mann'' does not identity Ragnhildr by name, her name is nevertheless preserved by ''Orkneyinga saga''.<ref>[[#M8|McDonald, RA (2000)]] p. 175 n. 55; [[#M9|McDonald, A (1995)]] p. 206; [[#A2|Anderson (1922)]] p. 255 n. 1; [[#V2|Vigfusson (1887a)]] p. 210 ch. 110; [[#A3|Anderson; Hjaltalin; Goudie (1873)]] p. 181 ch. 104; [[#F3|''Flateyjarbok'' (1862)]] p. 508 ch. 439.</ref> In the words of the chronicle, the union between Ragnhildr and Somairle was "the cause of the collapse of the entire Kingdom of the Isles".<ref>[[#M34|McDonald, RA (2019)]] pp. viii, 59, 62–63, 93; [[#W7|Wadden (2014)]] p. 32; [[#M4|McDonald, RA (2007b)]] pp. 67, 116; [[#M1|McDonald, RA (1997)]] p. 60; [[#D1|Duncan; Brown (1956–1957)]] p. 197; [[#A2|Anderson (1922)]] p. 137; [[#M7|Munch; Goss (1874a)]] pp. 60–61.</ref>|group=note}}