  We find instanton/cosmological solutions with biaxial Bianchi-IX symmetry,
involving non-trivial spatial dependence of the $\bbbc P^{1}$- and $\bbbc
P^{2}$-sigma-models coupled to gravity. Such manifolds arise in N=1, $d=4$
supergravity with supermatter actions and hence the solutions can be embedded
in supergravity. There is a natural way in which the standard coordinates of
these manifolds can be mapped into the four-dimensional physical space. Due to
its special symmetry, we start with $\bbbc P^{2}$ with its corresponding scalar
Ansatz; this further requires the spacetime to be $SU(2) \times
U(1)$-invariant. The problem then reduces to a set of ordinary differential
equations whose analytical properties and solutions are discussed. Among the
solutions there is a surprising, special-family of exact solutions which owe
their existence to the non-trivial topology of $\bbbc P^{2}$ and are in 1-1
correspondence with matter-free Bianchi-IX metrics. These solutions can also be
found by coupling $\bbbc P^{1}$ to gravity. The regularity of these Euclidean
solutions is discussed -- the only possibility is bolt-type regularity. The
Lorentzian solutions with similar scalar Ansatz are all obtainable from the
Euclidean solutions by Wick rotation.
