Irish is a language spoken in Ireland and the country's maximum population believes in Christianity. The European country consists of the largest Roman Catholic Church in the world and the law of the country is in suppose of freedom for all the religions including Islam, Buddhism and Hinduism etc…

Different people believe in different cultures as per their custom's and rituals.  Every country is influenced by its religious believers and so do people of any country. People in Ireland are supporting different religions same as people in India, so will their rituals differ.

As per the naming is concerned majority of Irish people name their babies according the Christianity because maximum people believe in this religion. Naming a baby boy or girl with a beautiful meaning as per the rituals of Roman Catholic Church is auspicious for them. Some of the Irish baby names are also from the Gaelic or Irish-Gaelic or Celtic origin but more or less influenced from Christianity.

 "Donnacha", is from Irish origin with the meaning "Donn means brown and chadh means gracious or noble". "Donnacha" was High king of Ireland and the name was used in old Irish. Donnacha is the original name which had derived names like "McDonagh", "O'Donaghue" and "Dunphy" usually used as surnames.

 "Kevin", is also from Irish origin that means "kind, handsome, and calm". "Kevin" was a saint and among the oldest messengers of god.  "Kevyn", "Keven", or "Kevan" are its derivatives and the original name is still among top 100 names in United States of America. 

"Sweeney", is among Scottish origin derived from the Gaelic name "Mac Suibhne", that means Pleasant, well-disposed and satisfied. It also means Son of "Suibhne". This name is used as surname.

"Cainnech", is the name of saint also known as Canice, Kenneth, Kenny, Canicus or are derivatives of the original name "Cainnech" that means handsome, fair, good and beautiful. It's of Scottish origin. Saint Cainnechwas from Aghaboe, venerated in Roman Catholic Church and spread Christianity in Ireland.

 

"Cian" is from Irish-Gaelic origin that means ancient, olden. "Cian" was also name of a son-In-Law of Brian Boru who played a key role in the battle of Clontarf in 11th century. Its variants include Kean, Keane and Kiean. It is among the top 20 popular names in Ireland.

"Sean" is an Irish name adapted from Anglo-Norman name John that means gracious, God gift was popular due to highly honored Saint who was considered as the ancestor of Jesus Christ.  Shane, Shaun, Shayn are among its variants.

"Oisin" is an Irish origin that means "Tiny deer". The name is also used as a girl baby name. He was a legendary warier and a poet. "Osheen" is its only variant that is famous among English countries and is among top 15 names in Ireland.

Above are some of the top Irish Baby Boy Names with their Meanings and Origin details that are popular not only among Ireland but in different English countries. These baby names also include some of the cultural traits of the Ireland.