Roan is an Irish name originally derived from the surname Ó Ruan, meaning 'little seal', and was historically associated with individuals having dark hair or eyes due to seals' dark fur and eyes. This unique name has evolved into a modern given name, bearing a rich history dating back to ancient Ireland, including being borne by notable figures such as Ruaidhrí mac Tairrdelbach Ua Conchobair, also known as 'Roan' due to his dark complexion.