  We report the synthesis and characterization of the novel silicide LaFeSiH
displaying superconductivity with onset at 11 K. We find that this
pnictogen-free compound is isostructural to LaFeAsO, with a similar
low-temperature tetragonal to orthorhombic distortion. Using density functional
theory we show that this system is also a multiband metal in which the
orthorhombic distortion is likely related to single-stripe antiferromagnetic
order. Electrical resistivity and magnetic susceptibility measurements reveal
that these features occur side-by-side with superconductivity, which is
suppressed by external pressure.
