Therese of Lisieux has been recognized as a saint since her canonization date of May 17, 1925.
Only one saint is named Therese - Saint Therese of Lisieux. However, there are several saints named Teresa.
To the best of my knowledge, none.
Mary, Joseph, John, Peter, Andrew, James, Simon, Gregory, Francis, Teresa, Therese, Agnes, Agatha are all saint names and there are many more.
For a list of many of the saints whose names start with T click on this link.
Saint Therese of Lisieux, also known as the "Little Flower," is often associated with answering prayers with a sign of a rose or a flower. She is known for her intercession and answering prayers with roses as a symbol of favor or blessing. Many believers have reported receiving flowers or the scent of roses in response to their prayers to Saint Therese.
There are any number of St. Theresas, including several St. Teresas, and St. Thereses. You will have to be far more specific, for instance, three of the most famous would be: St. Teresa of Avila St. Therese of Lisieux Blessed Teresa of Calcutta
Saint Patrick studied for six years to become a missionary.
Monica is known as the mother of Saint Augustine of Hippo and for the many years she prayed for his conversion.
Since we do not know when Saint Andrew was born nor when he died, there is no answer to this question.
Many saints died of diseaes that were not curable at the time. St. Therese of Lisieux, St. Bernadette are just two examples.
Saint Francis of Assisi lived for 44 years, from 1181 to 1226.
Saint Patrick is the patron saint of many things but Saint Peter and Saint Joseph are the patron saints of the Universal Church.