Môn, a ymrannai'n dri chantref, Cemais (gogledd), Aberffraw (gorllewin), Rhosyr (de-ddwyrain)
Ffurfiau: Môn, Maesbrog, MônCyfeiriadau: 10.10 100.10 100.43n 108.4n 117.47n 12.11 12.47 15.18 16.33n 19.10n 20.77n 21.12 21.56 21.66 29.19n 38.41n 38.43n 38.53 39.43n 39.51n 45.30 49.34 52.13n 55.45n 56.34 56.44 56.51 57.1n 57.53 60.47 60.4n 62.18 62.26 62.36 62.44 63.18 63.26 63.2n 63.48 63.62 63.64 63.68 64.2n 64.38 64.52 64.62 65.18 65.37 65.48 65.66 65a.58 70.27n 70.3n 72.28n 72.63 76.18 76.6
Maesbrook, pentref i’r dwyrain o Lanymynech a ger y Cnwcin yn swydd Amwythig
Ffurfiau: Môn, Maesbrog, MônCyfeiriadau: 79.38n
Môn, a ymrannai'n dri chantref, Cemais (gogledd), Aberffraw (gorllewin), Rhosyr (de-ddwyrain)
Ffurfiau: Môn, Maesbrog, MônCyfeiriadau: 80.32 80.44 82.31 82.9n 91.15n
