The origin of this name/word "Hakan" is Turkish, and the meaning is not as they (picture above/wiki) say.
The meaning is "ruler, leader", as today "king".
Turks (7th-8th c) did use the title Hakan before the Scandinavians (10th c) did.
Hakan was also used by the Hun-Turks, which they came to Scandinavia after the death of Atilla the Hun (d.453), and then begins also the age of the Vikings. So, not every Viking was a Scandinavian blood 😉
The word/title "Earl", as in "Earl Haakon Sigurdsson of Norway (937-995)" is also Turkish of etymology.
It was used by the Turkish tribes (even in BC. times) long before the Germanic tribes was using.
So, it is not Germanic as the Oxford English Dictionary says! Or Proto-Norse as the wiki says!
"They" say it comes from Eril (Er-il) > Lord of the country
BUT... It is Turkish.
* Er = Man, lord, ruler, master.
* İl / El = County, province, state.
* Erilaz = Er İl As (Turkish, As is also a tribe name; "Leader of the As County")
> The Scythian-Turks,
> Hun-Turks, Avar-Turks, Khazar-Turks;
> Kipchak (Polovets)-Kuman (Cuman)-Turks, Pecheneg-Turks
in Europe....who was assimilated among Germanic, Celtic, Anglo-Saxon, Fin-Ugor, etc., tribes.
"What indeed was this ‘European’ identity? The early medieval culture that ultimately gave rise to modern European nation states was brought about by a fusion of Hunno-Danubian (i.e. eastern Eurasian culture of the steppe brought to the west by the Hunnic Empire and the Alans) aristocratic culture and the surviving residues of Roman civilization in western Eurasia. The elite of the Frankish, Burgundian, Ostrogothic, Lombard and other states in the West patronized this hybrid culture that later became the dominating ethos of medieval ‘Europe'.... It has also been argued that many of the leaders of post-Roman Europe were either Hunnic or mixed Hunnic in origin. The Huns certainly did not just disappear into oblivion. They left visible political and cultural traces that facilitated the transformation of Roman Europe into early medieval Europe."
Hyun Jin Kim - The Huns
I find this article (Were there Huns in Anglo-Saxon England? Some thoughts on Bede, Priscus & Attila, by Dr. Caitlin R.Green / link) also a progress; Accepting "a Hun-Turk as ancestor"...
But "ancestor" is not the only thing, we can also trace with art & traditions, plus the using of Turkish alphabet (Scythian-Hun/Turk) and transforming it into "futhark", as they call (German tribes had no writings before Huns, south part did use Latin alphabet with Roman Emp., but literacy rate was also very very low). One of the letter in "Futhark", and after that in "Anglo-Saxon alphabet", has the same meaning as the letter (tamga=mark) in Turkish alphabet (Orhon insc.), and that is "home, land", which is very important in humans life... So, not only as "ancestor" had the Turks an impact on German and Celt tribes, but also with social life and civilization.
Don't underestimate the power of Turkish and Turks