The word "broder" is not included in the database, but Verbix uses automation to display the inflected forms.
Noun: broder
Sg.
broder
Pl.
brodres
Genitive
Dative
Sample Sentences
1485, Thomas Malory, Le Morte Darthur, Book Two Capitulum ix
Anone after cam the knyght with the two swerdes and balan his broder / and brought with hem kynge Ryons of Northwalys and there delyuerd hym to the porters and charged hem with hym / & soo they two retorned ageyne in the daunyng of the day (Anon after came the knight with the two swords and Balan his brother / and brought with them King Ryons of North Wales and there delivered him to the porters and charged them with him / and so the two of them returned again in the dawning of the day.)