  By means of first-principles calculations, we predict two new types of
partially hydrogenated graphene systems: C$_{6}$H$_{1}$ and C$_{6}$H$_{5}$,
which are shown to be ferromagnetic (FM) semimetal and FM narrow-gap
semiconductor, respectively. When properly doped, the Fermi surface of the two
systems consists of an electron pocket or six hole patches in the first
Brillouin zone with completely spin-polarized charge carries. If
superconductivity exists in these systems, the stable pairing symmetries are
shown to be $p+ip$ for electron doped case, and anisotropic $p+ip$ for hole
doped case. The predicted systems may provide fascinating platforms for
studying the novel properties of ferromagnetism and triplet-pairing
superconductivity as well as two-dimensional spintronics.
