[6] According to the chronicle of John of Biclaro, as co-king Liuvigild initiated the first of several campaigns to expand the territory of the kingdom of the Visigoths, which Peter Heather describes as a "list of striking successes".

Whilst preparing to check the imminent advance of the Suebi in 573, Liuvigild received news that his brother Liuva had died, which left him ruler over the entirety of the Visigothic dominions.

[9] Liuvigild made efforts to secure a peaceful succession, a perennial Visigothic issue, by associating his two sons, Hermenegild and Reccared, with himself in the kingly office and placing certain regions under their regencies; namely, making them dukes over Toledo and Narbonne.

[15] Through this action and others administrative moves, Liuvigild reassured his rule and when he had secured the capital, began a new campaign, during which he conquered the district of Sabaria, the province of Braganza, and Torre de Moncorvo along the Suebian frontier.

[9] Gregory of Tours contended that Liuvigild exceeded his power when he divided the kingdom between his two sons, but it is feasible that he took this action to weaken the authority of the nobles from amid both the Visigoths and the Spanish-Romans.

[16] Undeterred by these manifold threats, he attended to the concerns within his empire and with his son Reccared's assistance, he succeeded in subduing the rebels who rose to oppose him.

In doing so, he seized Ammaia, the capital of the Cantabri; he took the Asturian stronghold, Saldania (Saldana); he also successfully quelled insurgent activities in Toledo and Evora (Aebura Carpetana).

[16] Sometime during this campaign in 576, Liuvigild's predominance led to the Suebian king Miro rapidly agreeing to a treaty which included paying tribute, if but for a short period.

Throughout the period of Hermenegild's religiously motivated sedition, Liuvigild sought various forms of theological reconciliation, including the acknowledgement of Catholic baptism (not forcing Arians to undergo a cleansing re-baptism upon conversion), tolerating the Catholic veneration of relics and saints, and softening the distinction between Christ and the Father by declaring them equals as opposed to the traditional Arian position, which held Christ as subordinate within the tripartite relationship.

[30] According to Gregory of Tours, Liuvigild fell ill in 586 and on his deathbed repented, wept for seven days and "embraced the Catholic faith" before he "gave up the ghost.

Further evidence of Visigothic affinity for all things Roman included the reestablishment of imperial style by Liuvigild, who recreated the royal regalia.

[34] However, important if not permanent changes in the Spanish realm came when Liuvigild's son Reccared aggressively promoted the Catholic faith at the expense of Arian Christianity, whereby he made Catholicism the official religion of the entire kingdom in 589.

[35] Later successors to Liuvigild included the likes of King Chindasuinth (642–653) and his son Recceswinth (653–672), both of whom reformed Visigothic laws and legal codes that essentially eliminated the distinction between Romans and Goths and which permitted intermarriage between the two peoples.