His father Constantius happens to die… (306) — the same event in Aurelius Victor and Zosimus

Aurelius Victor: His father Constantius happens to die there, and Constantine takes the throne with the support of all who were present.; Zosimus…

What each source says

Aurelius Victor, De Caesaribus · AD 306 · 브리타니아

His father Constantius happens to die there, and Constantine takes the throne with the support of all who were present.

Quo mortuo cunctis qui aderant, annitentibus imperium capit.
Location: Aur. Vict. Caes. 40.4

Zosimus, New History · AD 306 · 브리타니아(요크라고는 안 함)

When Constantius dies, his guards, judging his legitimate sons unfit and hoping for generous rewards, raise Constantine to the throne.

the guards, therefore, who thought none of his legitimate children to be fit for the imperial dignity, considered that Constantine was a person capable of…
Location: Zos. 2 (1814 영역) p.40

Where the sources differ

A and B are two of the sources listed above.

On what pointSource ASource BWhat differs (in Korean)
WhoAurelius Victor, De CaesaribusZosimus, New Historya는 곁에 있던 모두의 지지, b는 호위병들이 추대
Show on the map — open Aurelius Victor, De Caesaribus