Is it ok to give the same name to two sons, both BH alive?
And what about the same name for a son and a daughter, such as names which are usually given to both boys and girls (e.g. Simcha)?
Answer:
The custom is not to in both cases.
Sources:
כ״כ בשו״ת דברי מלכיאל ג, עה. וראה שו״ת צי״א יא, נו. וראה הנסמן בזיו השמות כא, א-ב.
#16591