In a message dated 07/03/1999 9:58:37 AM Eastern Daylight Time, TCT222@aol.com writes: << Subj: [GenConnecticut-L] Stepsibling vs. 1/2 sibling Date: 07/03/1999 9:58:37 AM Eastern Daylight Time From: TCT222@aol.com To: GenConnecticut-L@rootsweb.com Hello I was talking to a great aunt and she thought there was a difference between a stepbrother and a 1/2 brother, one having common father and one having common mother. Which one I don't know. Does anyone have information on this. Thanks Tracy >> Sure. A half-sibling is one in which each child sharea one common parent, either a mother of a father. A step-sibling is one in which both children have different parents, but then one parent of each child marries. Dave from Long Island