Early records reveal that this surname originated in Ireland. The etymological origin of the surname Hagan can be found in the Irish word “ogan”, which means “a personal name from a dim”. The ravages of time are the worst enemies of written documents; while the stone that was used to construct castles, towers and other structures often assured that these precious monuments were to survive to the present day, old scrolls were more often than not lost or even destroyed without leaving a trace. Nonetheless, careful research has revealed the following:. We found more information regarding this Last Name also in other historical archives. Over the centuries the name Hagan may have had many changes and the present form, according to our studies, appears to be different from the original. It is important to realize …