Visigothic Kingdom Puns

The Visigoths were an East Germanic people who conquered the Iberian peninsula during the migration period and following the fall of the Western Roman empire. The Visigothic kingdom established there would survive until the 8th century, when it was invaded and conquered by the Umayyad Caliphate, after the death of the Gothic King Roderic at the battle of Guadalete in 711. In the years following this, the Muslims would expand their control in Iberia and even expand deeper into Europe, including into France, leading to the Battle of Tours and establishment of the Frankish Empire under Charlamagne as a consequence.

What would the effects on history be if King Roderic had defeated the Moorish invaders and secured his rule over the kingdom. How would the timeline, culture and language have altered with the survival of the Visigothic state in Hispania?

The Merovingians are infamous for not practicing primogeniture and instead dividing the kingdom among all the sons of the previous king, leading to much fratricide.

How does this compare to the other "barbarian kingdoms"? Were the Visigoths in Spain, and the Ostrogoths in Italy plagued by similar disputes? How about the Lombards or the Vandals?

Specifically, I'm having difficulty finding good reading material or evidence of direct contact between those two states and their sub-kingdoms and Wessex, Kingdom of the West Saxons.
Any recommendations or suggestions for good sources to read/places to look for research material about this will be just as appreciated as direct answers to the question.

Ignore the papacy, I just *really* hate the pope sometimes...

With my own Suebi client state!

Compared to the centuries-long Reconquista, the Arab conquest of Iberia played out very quickly. Why did the Visigoths just go belly up, and was it more a question of relative Muslum strength or Gothic weakness?

Was wondering what prisons Visigothic kingdom (or other kingdoms in the same historical era-- 418–c. 721) would prisoners not of nobility be incarcerated in? Also, what are some of the conditions inside such prisons?

I specifically want to know if there were noble titles, a hierarchy, and perhaps any other aspects that set them apart from other kingdoms' nobility. Any sources where I can learn more would also be appreciated as I am having difficulty finding much on the Visigoths.

The Wikipedia article details how Galicia became part of these other kingdoms but it leaves me confused on how a "kingdom" can be part of a greater kingdom. Normally I thought that with feudalism a kingdom would be downgraded to a duchy or county or something like that. Was the case of Galicia maybe a personal union thing?

Other day I expose my Castille civ idea, and I took many ideas. Now I expose another Civ Idea: Visigoths, leads by Recaredo or Recesvinto I like to do a religiuos/military Civ. King Recaredo was famous for convert the visigoths to catholicism; and Recesvinto is remembered for compiling the Hispano-Roman and Germanic legal corpus in the Liber Iudiciorum.

I call the Civ Unique Ability "Concilios de Toledo", and I pretend to combine religion and governement or governors (sorry for my english). The Visigoth's Unique Unit is "Seniores Gothorum", a Medieval unit that replaces the Knight. And for the Unique Build I think in the Romanic Churchs that are distribute for all northen Spain. Thanks for your ideas!!

How would the Iberian peninsula change? how would the future of Europe and the world change?