Saint Patrick was a fifth-century Romano-British Christian missionary and bishop in Ireland. Known as the "Apostle of Ireland", he is the primary patron saint of Ireland, the other patron saints being Brigit of Kildare and Columba. Patrick was never formally canonised.
Here is a quote from St. Teresa of Avila's Autobiography:
“I took for my advocate and lord the glorious Saint Joseph and commended myself earnestly to him; and I found that this my father and lord delivered me both from this trouble and also from other and greater troubles concerning my honor and the loss of my soul, and that he gave me greater blessings than I could ask of him. I do not remember even now that I have ever asked anything of him which he has failed to grant. I am astonished at the great favors which God has bestowed on me through this blessed saint, and at the perils from which He has freed me, both in body and in soul.
The year was 1858 and the place was the French foothills of the Pyrenees. A young girl named Bernadette Soubirous, her sister Toinette, and their friend Jeanne Abadie were out gathering firewood for their families. Toinette and Abadie crossed a stream to gather wood on the other side, but Bernadette hesitated, fearing that wading in the cold water would bring on an asthma attack.
When her sister and friend moved out of her sight, she decided to take a chance anyway, and started to remove her shoes. It was at that moment that she was startled by a great noise like thunder. Turning towards a grotto behind her, she saw a single rosebush swaying as if being blown by a strong wind. Almost immediately she also saw a golden cloud form over the rosebush and a young and beautiful lady appear in the cloud. The lady smiled at Bernadette and motioned for her to come closer. All the fear that Bernadette had felt a few moments earlier faded away at the sight of this lady. She felt safe as if with her mother.