Definition
In legal usage, *brethren* is a plural noun meaning brothers, but its operative significance in law arises almost entirely from its use in wills and testamentary instruments. When a testator uses the word to describe a class of beneficiaries — most often as a limitation over of a child's share — courts have construed the term to include sisters as well as brothers, notwithstanding its masculine surface form. The word is treated as a noun of multitude capable of encompassing all siblings of the designated person, regardless of gender.
Common Language
Modern common usage (Wiktionary): Members of a religious congregation, particularly in Anabaptist traditions such as the Church of the Brethren; associated with plain dress, credobaptism, and nonresistance.
Historical common usage (Webster's 1913): Simply the plural of *brother*.
The gap between common and legal usage here is one of interpretive consequence, not meaning. Both common traditions use the word to refer to a brotherhood — literal or spiritual. What legal construction adds is the holding that the word's apparent gender limitation does not control: a testator who writes "to my brethren" may well intend daughters and sisters to share. A researcher relying on the plain English sense of the word — masculine plural — would reach the wrong result when reading older wills or equity decisions.
Common Confusion
Researchers sometimes assume that because *brethren* is grammatically masculine and plural, it functions as a term of art limited to male siblings. Historical equity courts rejected this assumption. The word is also confused with *brothers* in modern transcription of older instruments; the two may be interchangeable in context, but *brethren* was the more formal term in testamentary drafting and attracted more judicial construction.
Why It Matters in Research
The legal force of *brethren* is almost entirely concentrated in testamentary construction cases from equity courts, particularly from the eighteenth and nineteenth centuries. Researchers working with wills from that period must be alert to several things.
First, *brethren* in a limitation over — a clause directing what happens to a share if a beneficiary dies — was frequently the operative word determining who took. Courts in South Carolina, as reflected in the reported case *Terry v. Brunson*, extended the term to daughters of the testator, a non-obvious result that turned the outcome of inheritance disputes.
Second, the word does not appear frequently in modern drafting. Contemporary wills use *siblings*, *children of*, or defined class terms. When *brethren* appears in a document being researched, the document is almost certainly historical, and the researcher should look to equity reports rather than modern case law for interpretive guidance.
Third, the religious sense of the word appears in trust instruments governing church property, charitable bequests, and religious organization governance. There, *brethren* may refer to members of a congregation or brotherhood, not biological siblings. Context controls entirely, and the two senses can appear in documents from the same era without signaling confusion — a testator might leave property "to my brethren" meaning siblings, while a church charter describes its governing members as "brethren" in the congregational sense.
Finally, because equity courts construed the word generously to avoid intestacy or to give effect to presumed testamentary intent, researchers should expect holdings that expand rather than restrict the class of takers. This is consistent with the broader interpretive principle that ambiguous class-gift terms in wills are resolved in favor of inclusion.
Historical Dictionary Support
The three source dictionaries agree on the core proposition: *brethren*, when used in a will, is not necessarily limited to the masculine gender and may include sisters. Black's (1st and 2nd editions) state this identically, citing *Terry v. Brunson*, 1 Rich. Eq. (S.C.) 78. Bouvier's is more expansive, noting that the word "may be legitimately used in addressing mixed multitudes" and that it "may include a daughter," relying on both *Terry v. Brunson* and 4 American and English Encyclopaedia of Law (2nd ed.) 906.
What the historical dictionaries do not address is the religious sense of the word, which generates its own interpretive questions in trust and charitable bequest contexts. They also do not address the modern irrelevance of the term in active drafting — entries are necessarily frozen at their time of composition and read as if the word remains live in testamentary practice. Researchers should treat these entries as reliable for their narrow historical proposition but should not infer that *brethren* remains a common drafting term requiring routine construction.
Jurisdictional Note
The reported judicial construction of *brethren* to include sisters originates in South Carolina equity. Whether other jurisdictions would follow the same interpretive rule is not directly addressed in the historical dictionaries, though the American and English Encyclopaedia of Law entry suggests the reading was broadly accepted. Researchers working in other jurisdictions should not assume the South Carolina result transfers automatically without confirming local authority.