Prayers to St. Therese of Lisieux are said to sometimes be answered with a rose, or the scent of roses.
Saint Therese of Lisieux, also known as "The Little Flower," was not the millennium saint. The term "millennium saint" does not have a specific definition in Catholic tradition and is not commonly associated with any particular saint.
No, she never married and had no children.
I can find no reference to any saint named Darcy.
I don't know of any written prayers direct to her. But if you just pray to her, speak to her, she will hear you :)
Little is known about Saint Anne's life and it is unknown whether she had any siblings.
The Patron Saint Index does not show any patronages for Saint Edna of Arran (also known as Saint Enda of Arran).
No relic has any intrinsic power. Relics are inanimate objects, the physical remains of very holy people. They serve as a tangible connection to the saint and can help us focus our prayers and ask for that saint to intercede on our behalf to God for a favor to be granted.
Saint Keelin, also known as Caoilfhionn, was an Irish saint who is believed to have lived in the 6th century. He is known for his piety and healing miracles. Saint Keelin's feast day is celebrated on March 3rd.
If Monica had any siblings, there is no surviving record of them.
Very little is known about Saint Valentine of Rome, including any schools he attended.
If Saint George had any brothers or sister is not known as no records have been found that might answer that question.
Saint Remo, also known as Saint Romulus, was a Christian martyr who lived in the 3rd century. He is believed to have been a bishop in the area of Auxerre, France, and was known for his devout faith and preaching. Saint Remo is venerated in the Catholic Church as a saint and martyr.