In 1991 he took Perpetual Vows and became a Knight of Justice.

Four years later, he received the accolade as a Knight of Justice (Rechtsritter) in the Order.

Fra' Gherardo joined the order in 1963 and became a Knight of Justice in 1977.

He became a Knight of Justice in the order by taking Perpetual Vows in 1981 (the equivalent of a monk).

Each is also automatically appointed as a Knight or Dame of Justice or Grace upon being sworn into their viceregal office.

Also, the Queen made him the Prior for Australia, and a Knight of Justice of the Order.

He was Knight of Justice of the Order of Malta.

Willett was made a Knight of Justice in the Order of St. John in 2003.

He was appointed a Knight of Justice of the Order of Saint John in 1987.

He is a Knight of Justice for the Order of St. John and has his own grant of personal arms.