Frater

Latin term for "brother." The term may appear spelled several different ways in historical documents according to its grammatical usage in the sentence, as shown in the following table:

 Case  Singular  Plural
 Nominative  frater  fratres
 Vocative  frater  fratres
 Accusative  fratrem  fratres
 Genitive  fratris  fratrum
 Dative  fratri  fratribus
 Ablative  fratre  fratribus