Aquinas is Julia’s half-Italian and half-British butler. He used to be a high-wire performer until his wife fell during their act and died.
He is very loyal to Julia because his ethnicity doesn’t bother her and she has defended him against ethnic slander. He helps her search Grey House when Julia confides that Edward might have been murdered.
He is strong willed and able to keep the other servants in line, especially Magda.
When he thinks Julia is in danger he goes to Earl March for help.