Daily AncestorStepbrother
A stepbrother is the son of your stepparent from an earlier marriage; you share no parent with him.
A stepbrother is the son of the man or woman your parent married, from that person's earlier relationship. Stepsister is the female form. Unlike a half-brother, a stepbrother has no parent in common with you.
Blended households were common when spouses died young and the survivor remarried. Children with different surnames in one household may be stepsiblings.
As seen in a recordRelationship column of the 1880 census
Jas. Ross, Step-brother, S, 19
Sources
How to cite this page
Daily Ancestor. "Stepbrother." Dictionary of Old Record Words. https://dailyancestor.com/dictionary/relationships/stepbrother. Last checked 2026-10-01.