dryhtne (Old English) comes from Old English neo, from Pipil nawi, from Proto-Germanic nawiz, from Proto-Indo-European neh₂wis, from Proto-Indo-European neh₂u-, from Proto-Indo-European néh₂us, from Proto-Indo-European (s)neh₂- — to swim; to float.
Ancestry of “dryhtne”, step by step
dryhtne traces back through two separate lines of ancestry.