The official Mayo crest consists of nine yew trees (the word Maigh Eo (Mayo) means "the plain of the yews"; there is one yew for each baronry in the county), four crosses, a ship and waves. The Patriarchal Cross (a cross with two bars) symbolises the Catholic Archdiocese of Tuam and the three smaller crosses represent the other three Catholic dioceses in Mayo, i.e. Achonry, Killala, and Galway-Kilmacduagh-Kilfenora.  The motto "Dia is Muire Linn" translates as "God and Mary be with us". The rose was added to the crest to commemorate Pope John Paul II's visit to Knock Shrine in 1979.  The crest was originally used by the county GAA and was later formally adopted for use by the County Council.