Niels Bohr had an elder sister, Jenny, and a younger brother Harald.

Niels Bohr had one younger brother named Harald Bohr and one older sister named Jenny Bohr.

Niels Bohr was born in 1885, 7 October, second born of Christian Bohr and Ellen Adler Bohr. He had a younger brother Harald and an older sister, Jenny. Nies liked to play football together with his brother. He started school at seven and attended Gammelholm Latin School.

Niels Bohr had 4 children. 1 of witch was a nuclear scientist and won the Nobel Prize just like his dad.

Actually Niels Bohr had 6 children, but 2 died young.

Niels Bohr invented the bohr diagram.