An anonymous family friend of the couple discussed the choice of name
with Hello magazine.
A family friend of the couple has now explained the sweet meaning behind the name Sienna.
"They were looking for an Italian name which started with an S for Sarah, to honour the Duchess [Sarah Ferguson], and also reflected the golden rust colour of both the Duchess's hair colour and Beatrice's, which the new baby shares," they said.
The friend's explanation seems a bit confused, as Sienna is an English name, rather than an Italian one. It is, however, inspired by the Italian city of Siena.
Unlike some English names, the name Sienna has not caught on in Italy. While Sienna was the
23rd most popular name for girls born in England in 2019, the name was given to
just 12 newborn girls in Italy in 2019. In comparison, Evelyn, the 22nd most popular name for girls born in England, was given to 216 girls born in Italy.