Niall does not have a step brother. His brother's name is Greg.
Niall James Horan <3
Niall Horan's full name is Niall James Horan.
Niall Horan's full name is Niall James Horan.
His Brothers Name Is Greg Horan.
His Full name is Niall James Horan
Niall James Horan
Niall's surname is Horan.its Niall Horan
Niall Horan has 1 brother his name is Gregg.
Niall Horan's second name is "James," as in Niall James Horan.
Niall James Horan
His Brothers Name Is Greg Horan.
Niall James Horan