He spent considerable time fighting a series of lawsuits against family enemies in the county over ownership of manorial franchises.
[1] During his life span he collected antiquarian information about Wales, including the heraldry, genealogy and historical buildings and structures.
He was a literary man who was reflective of this period of interest in history and antiquities during the Elizabeth era.
In this service he was responsible for the military defensive, including the fortification of Milford Haven against possible Spanish invasion, and he trained the local militia for the county.
The couple had eleven children, including the eldest son, Alban Owen, born in 1580.