Definition
In Scots law, a term denoting a person's whole issue — that is, all of one's children or lineal descendants collectively. The word is most commonly encountered in succession and inheritance contexts, where it describes the class of persons entitled to participate in a deceased's estate as children. Though the primary meaning encompasses all issue broadly, historical usage acknowledges a narrower application in certain instruments and legal contexts, where bairns may refer only to immediate children rather than all descendants.
BAIRN'S PART (also bairns' part of gear): A legally defined share of a deceased parent's movable estate to which children are entitled as a matter of right in Scots law. If the surviving spouse is also alive, the bairns' part equals one-third of the free movable estate after debts are deducted. If there is no surviving spouse, the children's share rises to one-half. This is a form of legitim — the forced share protecting children from disinheritance — and is distinct from the portion freely testable by the deceased.
Common Language
Modern common usage (Wiktionary): Plural of bairn; children.
Historical common usage (Webster's 1913): A child; children (chiefly Scottish and Northern English dialect).
The common meaning and the legal meaning largely overlap — bairns are children — but the legal term carries specific technical weight in Scots succession law. In legal instruments and treatises, bairns describes a defined class with enforceable inheritance rights, not merely a descriptive label for offspring. The difference between "children" as a colloquial word and bairns as a term of art in a Scots deed or intestacy context can determine who takes and in what share.
Why It Matters in Research
Researchers working in Scots law materials, or in early American and colonial legal documents influenced by Scottish legal practice, will encounter bairns in succession instruments, testamentary writings, and estate records. Several navigational points deserve attention.
First, the scope problem: historical sources consistently flag that bairns can mean either all issue (the wider reading) or immediate children only (the narrower reading), depending on context. When interpreting a historical deed or will, a researcher cannot assume uniform usage. The instrument's context — particularly whether grandchildren are separately named or provided for — often determines which reading applies.
Second, bairns' part of gear is a concept deeply embedded in the Scots law of movables and legitim. Researchers tracing Scottish succession disputes in pre-union or post-union Scottish records will find this term operative in the division of estates. It sits alongside the widow's part (or relict's share) and the dead's part (the testable portion), and understanding the tripartite structure of Scots movable succession is essential to interpreting any estate accounting that mentions it.
Third, researchers using English-language legal materials should be alert to the fact that English law has no direct equivalent term. When bairns appears in an English or Anglo-American source, it is almost certainly quoting or referring to Scots law, not asserting an independent English doctrine.
Historical Dictionary Support
Black's Law Dictionary (both editions) and Burrill's Law Dictionary are in close agreement on the primary definition: bairns denotes one's whole issue, citing Erskine's Institutes (Book 3, Title 8, Section 48) as authority. All three sources note the qualification that the term is "sometimes used in a more limited sense," citing Bell's Dictionary of the Law of Scotland without specifying exactly what that narrower sense covers — a gap that researchers should be aware of when relying solely on these dictionary entries.
The second edition of Black's adds the definition of bairn's part, providing the fractional breakdowns (one-third with a surviving spouse; one-half without), which the first edition and Burrill omit. This makes the second edition the more useful starting point for researchers interested in the succession mechanics rather than just the terminology.
None of the historical dictionary entries discuss how bairns interacts with the broader Scots law of legitim or the tripartite division of the movable estate, which is essential context. Erskine's Institutes and Bell's Dictionary of the Law of Scotland remain the primary sources for substantive doctrine.
Jurisdictional Note
Bairns as a legal term of art is native to Scots law and has no operative role in English common law or American law. Researchers encountering it in non-Scottish sources should treat it as a reference to Scots doctrine rather than as an independent legal concept in that jurisdiction.