Q:What key details about vetranio  can be extracted from the following bio?  Bio: vetranio -lrb- ; died c. 356 -rrb- , sometimes incorrectly referred to as vetriano , was a roman soldier and statesman , a native of the province of moesia -lrb- in modern serbia -rrb- . he was an experienced soldier and officer when he was asked by constantina , the sister of roman emperor constantius ii , to proclaim himself caesar -lrb- march 1 , 350 -rrb- . her brother constans had been killed by magnentius earlier that year and she probably thought vetranio could protect her family and herself against the usurper . vetranio accepted , and coins were minted in his name , showing the title of augustus -lrb- full emperor -rrb- , rather than caesar , and the coins indicated that he expected to rule for five years , and hoped for ten . constantius first seemed to accept the new emperor and his regalia and sent him money to raise an army . vetranio frequently asked constantius for money and military aid to fight magnentius ; he also sent letters to the emperor professing his loyalty to him . when negotiations deadlocked , magnentius and vetranio made an alliance ; they sent an embassy to the emperor . the ambassadors met with the emperor in heraclea in thrace . magnentius offered to marry his daughter to constantius and to marry constantia the emperor 's sister , in turn . but first , they required that the emperor lay down his arms and accept the honor as senior emperor . constantius rejected their offer . constantius was on a campaign against the persians when magnentius came to power . constantius first met with vetranio at serdica , and both moved on to naissus in serbia . on 25 december 350 both men mounted a platform before the assembled troops ; constantius managed , by means of a strong speech , to have the soldiers acclaim him emperor . he then took the purple away from vetranio . the emperor led the old man down the stairs of the platform , called him father , and led him to the dinner table . he was allowed to live the remainder of his years as a private citizen on a state pension in prusa ad...
A:
- title is emperor of the roman empire- caption is on , the emperor is holding two labara , the ensigns the introduced by constantine i. reverse of this coin struck under vetranio- reign is 1 constantius ii -rrb- march -- 25 december 350 -lrb- together with- death date is c. 356- name is vetranio- image is maiorina-vetranio-siscia ric 281.jpg- birth place is moesia in modern serbia