As the question is so ambiguous I will need a long answer
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Our Lady: no more is needed.
Saint Anthony of Padua: I was named after him and he is probably the Saint I pray to the most, other than Mary the mother of our Lord. Although, the reason is fairly silly; I am always losing stuff.
Saint Albert the Great: I was named after him as well. It helps that he was a Doctor of the Church who advocated that religion and science should work together. I am honored to be named after this great Saint.
Saint Aloysious Gonzaga: My confirmation name. I chose it for a silly reason, but I was also impressed by his life, by his zeal, purity, and humility.
Saint Catherine of Sienna: A holy woman and Doctor of the Church who was not afraid to tell the truth to even the Pope. The Church payed a huge price because the Pope did not listen to her about returning to Rome.
Saint Francis of Assisi: In my opinion the greatest saint that ever lived. No one else in the Church, besides Christ, has been so influential in the Catholic Church. His humility, piety, and love, changed the world.
Saint Joan of Arc: I am not a soldier, nor would I ever consider any other soldier saint as being in my top list of Saints but her piety and humility earns her a spot.
Saint Tarcisius. When I was young I found a book about this Saint who died protecting the Holy Eucharist while being stoned by a mob, holding onto it tightly until he was brought to the Bishop. His story helped me to greatly appreciate the importance of the Real Presence of Christ in the Holy Eucharist.
Saint Theresa of the little flower, patron saint of missionaries. Her piety and desire to spread God’s blessings to all of the world has been one of my greatest inspirations.
Saint Athanasius of Alexandria. He is one of the most important and influential of Saints whom many people who never heard of. He is perhaps the Saint that I most identify with.
Saint Helena (mother of Constantine) and Saint Monica (mother of Augustine) whose prayers converted their sons.
Saint Thomas Aquinas: a great theologian and writer who could very easily over think a problem much like I do. I am particularly inspired by his words near the end of his life “Reginald, I cannot, because all that I have written seems like straw to me”.
Saints Perpetua and Felicity: 2 early African martyrs that we commemorate today even in the liturgy. I don’t know why I feel such a connection to them but I do.
Blessed Mother Theresa: a great and holy woman of our age who fought through doubt to do great things.
G.K. Chesterton: his writings helped me through a tough spot in my life.
) I picked the two most prolific writers I could think of, one old, one new.