Question: Who is the mother of the man who ruled Friuli from 874 until at least 890?

Context paragraphs:
Pauravas: Pauravas (Sanskrit: पौरव ) was an ancient kingdom in the northwest Indian subcontinent, dating from at least 890 BC to 322 BC.  The history of the Pauravas is contained in Hindu historical and religious texts.

Gesta Berengarii imperatoris: The Gesta Berengarii imperatoris (or "Deeds of the Emperor Berengar") is an epic poem chronicling the career of Berengar of Friuli from its inception (c.874) until his imperial coronation in Rome in December 915.  It is a court panegyric and highly laudatory of its namesake.  To the modern historian it is "difficult and often maddeningly vague."

Early Scandinavian Dublin: The First Viking Age in Ireland began in 795, when Vikings began carrying out hit-and-run raids on Gaelic Irish coastal settlements.  Over the following decades the raiding parties became bigger and better organized; inland settlements were targeted as well as coastal ones; and the raiders built naval encampments known as longphorts to allow them to remain in Ireland throughout the winter.  In the mid 9th century, Viking leader Turgeis or "Thorgest" founded a stronghold at Dublin, plundered Leinster and Meath, and raided other parts of Ireland.  He was killed by the High King, Máel Sechnaill mac Máele Ruanaid, which was followed by several Irish victories against the Vikings and the seizure of Dublin in 849.  Shortly after, a new group of Vikings known as the Dubgaill ("dark foreigners") came to Ireland and clashed with the earlier Viking settlers, now called the Finngaill ("fair foreigners").  The wavering fortunes of these three groups and their shifting alliances, together with the shortcomings of contemporary records and the inaccuracy of later accounts, make this period one of the most complicated and least understood in the fledgling city's history.  In 853 a Viking warlord called Amlaíb (, possibly Olaf the White) arrived and made himself king of Dublin.  He ruled along with his brothers Ímar ("Ívarr", possibly Ivar the Boneless) and Auisle ("Ásl").  For the next fifteen years or so, they used Dublin as their base for a series of campaigns against Irish kingdoms.  During these conflicts they briefly allied themselves with several Irish kings.  The Dublin Vikings also carried out a number of raids in Britain at this time.  The deaths of Ivar (c.873) and Olaf (c.874) were followed by internecine conflict among the Vikings.  Although intermittent warfare between the Vikings and the Irish continued, these inner conflicts weakened the Viking colonies and made it easier for the Irish to unite against them.  In 902, Cerball mac Muirecáin, king of Leinster, and Máel Findia mac Flannacáin, king of Brega, launched a two-pronged attack on Dublin and drove the Vikings from the city.  However, in 914 the Vikings now known as the Uí Ímair (House of Ivar) would return to Ireland, marking the beginning of the Second Viking Age.

Sajid dynasty: The Sajid dynasty (Persian: ساجیان‎ ‎ ), was an Iranian muslim dynasty that ruled from 889-890 until 929.  Sajids ruled Azerbaijan and parts of Armenia first from Maragha and Barda and then from Ardabil.  The Sajids originated from the Central Asian province of Ushrusana and were of Iranian (Sogdian) descent.  Muhammad ibn Abi'l-Saj Diwdad the son of Diwdad, the first Sajid ruler of Azerbaijan, was appointed as its ruler in 889 or 890.  Muhammad's father Abi'l-Saj Devdad had fought under the Ushrusanan prince Afshin Khaydar during the latter's final campaign against the rebel Babak Khorramdin in Azerbaijan, and later served the caliphs.  Toward the end of the 9th century, as the central authority of the Abbasid Caliphate weakened, Muhammad was able to form a virtually independent state.  Much of the Sajids' energies were spent in attempting to take control of neighboring Armenia.  The dynasty ended with the death of Abu'l-Musafir al-Fath in 929.

Gisela, daughter of Louis the Pious: Gisela (born 821) was the youngest daughter of Louis the Pious and his second wife, Judith of Bavaria.  She married the powerful and influential Eberhard, Duke of Friuli, later canonized as Saint Eberhard, with whom she had several children including King Berengar I of Italy, Margrave of Friuli.  Gisela was renowned for her piety and virtue, much like her namesake, Gisela (the sister of Charlemagne), who had chosen the religious life from girlhood.

Furlana: The furlana (also spelled furlane, forlane, friulana, forlana) is an Italian folk dance from the Italian region of Friuli Venezia Giulia.  In Friulian, "furlane" means "Friulian", in this case "Friulian Dance".  In Friuli there has been a Slav minority since the Slavic settlement of the Eastern Alps , and the furlana may well have originated as a Slavonic dance.  It dates at least to 1583, when a "ballo furlano" called "L'arboscello" was published in Pierre Phalèse the Younger’s "Chorearum molliorum collectanea" and in Jakob Paix’s organ tablature book, though its chief popularity extended from the late 1690s to about 1750.  It is particularly associated with Venice because, at the time of its popularity, Friuli was a part of the Republic of Venice .

Unruoch III of Friuli: Unruoch III or (H)unroch III (c. 840 – 874, after 1 July) was the margrave of Friuli from 863 to 874.  He was the oldest successor of Eberhard of Friuli.  He married Ava, a daughter of Liutfrid of Monza, and left a son Eberhard of Sulichgau, but was succeeded by his brother Berengar.  He left a daughter who became a nun in Brescia and was abducted by men of Liutward of Vercelli in 887 and forced to marry one of his relatives.

Berengar I of Italy: Berengar I (Latin: "Berengarius, Perngarius" ; Italian: "Berengario" ; 845 – 7 April 924) was the King of Italy from 887, and Holy Roman Emperor after 915, until his death.  He is usually known as Berengar of Friuli, since he ruled the March of Friuli from 874 until at least 890, but he had lost control of the region by 896.

Ásbjǫrn skerjablesi: Ásbjǫrn skerjablesi (died 874), also known as Ásbjǫrn jarl skerjablesi, is a ruler of the Hebrides attested by "Landnámabók" and "Droplaugarsona saga".  His epithet, "skerjablesi", translates to "skerry blaze".  One possibility is that this name means "the man with a blaze from the Skerries", although the particular skerry which this might refer to is unknown.  Another possibility is that, whilst the word element "blesi" ("blaze") refers to Ásbjǫrn's nickname, the element "sker" ("skerry") refers to his hangout.  According to "Landnámabók", Ásbjǫrn was slain in 874 by Hólmfastr Véþormsson and Grímr (a nephew of Hólmfastr's father).  Ásbjǫrn's killers are stated to have enslaved Ásbjǫrn's wife, Álof (daughter of Þórðr vaggagði), and his daughter Arneiðr.

Kocel: Kocel ( 861–874) was a Slavic ruler of Lower Pannonia, a polity known in historiography as the Balaton principality.  He was an East Frankish vassal titled "comes" (count), and is believed to have ruled between 861 or 864 and 876.

Supporting paragraphs: Gisela, daughter of Louis the Pious Berengar I of Italy
Answer: Gisela