(which has nothing to do with water,
but is an Anglicisation of the county Donegal surname Maguire
[Irish: Mac Uídhir],
for many of that name fled starvation in North-Western Ireland
to wage-slavery in Lowland [Lalland] Scotland.
In French, however, this mean-sounding, Lallands name
sings sweet and sexy:
vɛjʁ - to rhyme roughly with layer as pronounced in Louisiana.
(I'm sure y'all are grateful for this information.)