Where does “Searoburg” come from?

Searoburg (Old English) comes from Old English burg, from Proto-Germanic burgz, from Proto-Indo-European bʰr̥ǵʰ-.

Ancestry of “Searoburg”, step by step

Searoburg traces back through two separate lines of ancestry.

via Old English burg

StepLanguageWordMeaning
1Old Englishburgcity; town; a fortified place: stronghold, fort,...
2Proto-Germanicburgzfortification, stronghold; city
3Proto-Indo-Europeanbʰr̥ǵʰ-

via Old English searu

StepLanguageWordMeaning
1Old Englishsearumachine; device, contrivance; deceit, stratagem
2Proto-Germanicsarwąequipment, armor
3Proto-Indo-Europeanserw-to guard
Every word from Proto-Indo-European bʰr̥ǵʰ-Every word from Proto-Germanic burgzEvery word from Old English burg