According to Hamann, Rustimo's baptism was at Vienna on May 26th 1878. Crownprince Rudolf was his godfather. Maybe that's why he was called Rudolph. His name was written with "ph", maybe to make a difference between his name and the name of the Crownprince.
Elisabeth wrote to her mother Luise: Today there was the baptism of Rustimo in Valérie's room [...] Rudolf was his godfather. It was ceremonial and ridiculous. People cried and laughed. Rustimo himself was touched by the ceremony and cried.
Rustimo also attended to Marie Wallersee's wedding to Larisch at Gödöllö. He went next to Valérie into the church.
In 1884, Rustimo became "Kammeransager" ... I don't know how to translate it. It must be a job at court. Elisabeth's ladies-in-waiting didn't like him at all. They said Rustimo was cheeky and conceited. In 1885, he was suddenly out of Elisabeth's favour. He was sent to Ybbs and died in 1892.
Elisabeth only wanted to have some kind of toy to provoke the Austrian court ... Poor Rustimo.
By the way: Duke Max, Elisabeth's father, also had four black servants. They were baptized in the Frauenkirche at Munich.