Several Co Galway townlands were transferred to Mayo as a result of the Local Government (Ireland) Act 1898.
BARNAHOWNA, CHURCHFIELD LOWER, CHURCHFIELD UPPER, DIRKBEG,
GARRANAGERRA, GORTMORE, GREENAUN, KILLATEEAUN, LETTEREENEEN,
TONAGLANNA, TREAN, CAPPANACREHA, CUMMER, DERRY, DERRYPARK,
DOOLETTER, FINNY, GLENBEG EAST, GLENBEG WEST, KILBRIDE, KILMORE,
LUSTEEN BEG, LUSTEEN BEG ROCKS, LUSTEEN MORE, MAUMTRASNA, RAM'S ISLAND, ROUND ISLAND, SHANVALLYCAHILL
There may be other instances.