Fergus is a Gaelic name that means "man of vigor" or "strong warrior". In Irish mythology, Fergus was a legendary figure known for his bravery and leadership. The name Fergus is often associated with qualities such as strength, courage, and determination. People with the name Fergus are said to be charismatic and confident, with a natural ability to inspire others. Overall, Fergus is a powerful and timeless name that conveys a sense of resilience and authority.