Isle of Anglesey
Llan Vair y pwyll Gwinghill (1536),
ll.fair ymhwll gwingill (1566). ‘Church of St Mary in Pwllgwyngyll’. Welsh
llan +
Mair. The township name
Pwllgwyngyll means ‘pool of the white hazels’ (Welsh
pwll +
gwyn +
cyll). A fanciful addition of
gogerychwyrndrobwllllantysiliogogogoch was further made in the mid-19th cent., meaning ‘fairly near the rapid whirlpool by the church of St Tysilio at the red place’ (Welsh
go +
ger +
y +
chwyrn +
trobwll +
llantysilio +
coch), based on local names or features, giving an overall
Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.