  We study superconductivity in a normal metal, arising from effective
electron-electron interactions mediated by spin-fluctuations in a neighboring
antiferromagnetic insulator. Introducing a frustrating next-nearest neighbor
interaction in a N\'eel antiferromagnet with an uncompensated interface, the
superconducting critical temperature is found to be enhanced as the frustration
is increased. Further, for sufficiently large next-nearest neighbor
interaction, the antiferromagnet is driven into a stripe phase, which can also
give rise to attractive electron-electron interactions. For the stripe phase,
as previously reported for the N\'eel phase, the superconducting critical
temperature is found to be amplified for an uncompensated interface where the
normal metal conduction electrons are coupled to only one of the two
sublattices of the magnet. The superconducting critical temperature arising
from fluctuations in the stripe phase antiferromagnet can be further enhanced
by approaching the transition back to the N\'eel phase.
