A Royal Fellow of the Royal Society is elected to the Fellowship and Foreign Membership of the Royal Society. The council of the Royal Society recommends members of the British Royal Family to be elected and then the existing Fellows vote by a secret ballot whether to accept them.
There are presently five Royal Fellows (excluding the Patron):
The British Monarch is always the Patron of the Royal Society, regardless of whether he/she has been previously elected a Royal Fellow. The present Patron, Queen Elizabeth II, was elected a Royal Fellow in 1947 before she acceded the throne in 1952.
In the past members of foreign royal families have also been elected Royal Fellows.