King
George
III
came
to
the
throne
on
October
25th
,
____________________
,
following
the
death
of
his
grandfather
,
____________________
____________________
.
When
the
he
died
in
1820
,
he
had
been
King
for
____________________
years
,
which
gained
him
the
title
of
longest
-
lived
and
longest
-
reigning
British
monarch
.