Bertram
He doesn't have one. He does however have a younger half-brother named Bertram, at least "younger" in the respects he was born after Stewie but in his 2 appearances after he was born he appeared the same size and age.
pLace
no his half brothers name is Jaxon Bieber
There is no special day for half-brothers, much less for half-brothers twice removed (a relationship name that has no meaning).
FDR's half-brother's name was James after FDR's dad.
He had two half-brothers , Lawrence and Augustine.
Her half brothers name was Charles
Tyler
Dave
September 11th
Rob Roy
Helen Keller's two half-brothers were named James Keller and Phillip Brooks Keller.