For background on how the map was made (and its flaws), see the relevant blog entry.
|Fitzsimons||numerous: Down, Monaghan-Cavan, Louth-Meath. Ir. Mac Síomóin. They were in Down, Mayo & W Meath in 13 cent. In Mayo they adopted the Irish name Mac an Ridire (son of the knight), which still exists as Eddery. SI, IF & SGG.|
|Mac Síomóin||Fitzsimons: líonmhar: an Dún, Cabhán-Muineachán-Lú. Angla-Normannaigh a shocraigh sa Dún, Iar-Mhí agus Maigh Eo ón 13 céad ar aghaidh.|
DEDs where Fitzsimons and a second surname are found together