Owen is traditionally traced to Welsh roots meaning "young warrior" or "well-born," though like many old Celtic names its exact derivation is debated among linguists. What tends to carry through is a sense of someone shaped early by responsibility -- young in years, perhaps, but not in bearing.
If the lords of the triplicity of the conjunction of the lights shall friendly respect each other, the first to the second, the second to the third, it shows eminent prosperity, and a freedom from sorrows. - William Lilly (1602.-1681.)