Brannan is a traditional Irish name that means "descendant of Breen" or "son of Bran." It is often used as a first name for boys and is believed to symbolize strength, courage, and leadership. Brannan has a timeless and classic feel to it, making it a popular choice for parents looking for a strong and sturdy name for their son. People with the name Brannan are often seen as dependable and reliable individuals who can be counted on in times of need. Overall, Brannan is a name that carries a sense of honor and respect in Irish culture.