The story
- Old English · inherited fromBaddanbyrġ
- English todayBadby
Meaning 'Badda's fortified place', from Old English Baddanbyrġ, from the personal name Badda, genitive singular Baddan + byriġ, the dative case of burh (“fortress”). The first syllable of the second element was elided over time through natural erosion, which led to it sounding identical to the common Old Norse-rooted locative ending -by.
Etymology from Wiktionary, CC BY-SA 4.0.