Roberto Vioni was born in Rome, Italy on 20 August 1886. He was the son of Fiorenzo Vioni.
He came to England as a young man and was married to Muriel Thorn Woodyard (b. 1882 in Ipswich, Suffolk) around 1910, although there was no record for their marriage. The couple appeared on the 1911 census living at 8 Lynton Mansions, Kenington Road, Lambeth London and Roberto was described as a restaurant waiter. Also present at this address as a lodger was future à la carte restaurant waiter Maurice Debreucq.
He later went to work for Mr Gatti and the Titanic would be his first ship. When he signed on, on 6 April 1912, his address was given as 32 Jessie Terrace, London, a collective address for Gatti employees. He came aboard on 10 April.
Roberto Vioni died in the sinking. His body, if recovered, was never identified. What became of his widow after the disaster is unknown.
To mark the centenary of the disaster a plaque commemorating Roberto Vioni and his colleague Roberto Urbini was unveiled at the Casa del Cinema in Villa Borghese. It reads:
IN OCCASIONE DEL CENTENARIO
I GIOVANI LAVORATORI ROMANI
SCOMPARSI NEL DISASTRO DEL
Nella solitudine del mare
a un abisso dalta vanita umana
e dall' Orgoglio dela Vita che la progetto
ess in silenzio giace
15 APRILE 1912 15 APRILE 2012