St. Helena discovered the True Cross and is in the Loyola Kids' Book of Saints by Amy Welborn....first page here...her section is "Saints are people who are strong leaders."
St. Nicholas,St. John Bosco, St. Elizabeth Ann Seton, Blessed Gianna Beretta Molla
St. Monica,St. Cyril and St. Methodius, St. Therese of Lisieux,Blessed Frederic Ozanam,
St. Hildegard of Bingen,Blessed Fra Angelico,St. John of the Cross,Blessed Miguel Pro
St. Benedict,St. Dominic de Guzman,St. Teresa of Avila,St. Louis de Monfort
St. Juan Diego, St. Frances of Rome, St. Bernadette Soubirous, Blessed Padre Pio
St. Boniface, St. Peter Claver, St. Francis Xavier, St. Francis Solano, St. Francis Xavier Cabrini