  We report the discovery of two new low-mass, thermally bloated, hot white
dwarfs among the Kepler sample of eclipsing binaries. These are KIC 9164561 and
KIC 10727668 with orbital periods of 1.2670 and 2.3058 days, respectively. The
current primary in both systems is an A star of about 2 Msun. This brings the
number of similar binaries among the Kepler sample to six, and the two new
systems have the shortest orbital periods among them. The white dwarf in KIC
9164561 has the largest thermal bloating, compared to its cold degenerate
radius, of about a factor of 14. We utilize RV measurements of the A star in
KIC 9164561 to determine the white dwarf mass rather accurately: 0.197 +/-
0.005 Msun. The mass of the white dwarf in KIC 10727668 is based on the Doppler
boosting signal in the Kepler photometry, and is less accurately determined to
be 0.266 +/- 0.035 Msun. Based on the inferred radii and effective temperatures
of these two white dwarfs we are able to make an independent theoretical
estimate of their masses to within ~0.01 Msun based on evolutionary models of
their cooling history after they lose their hydrogen-rich envelopes. We also
present evidence that there is a third body in the KIC 9164561 system with an
orbital period of 8-14 years.
