The church under the name
St Modan and Cill-Modhint
Before Moydow was Moydow it was Cill-Modhint, the church of Modhint - usually identified with St Modan, who is recorded around the year 591 and is said to have been made a bishop and to have founded a religious cell here. The early church associated with him was destroyed by fire in 1155. No fabric of it survives. The saint left only his name in the older form of the placename, and the long memory of a Christian site on this ground centuries before the present village or its churches existed.
An O'Farrell stronghold in ruin
Mornin Tower House
South of the village stands Mornin Tower House, also known locally as Moydow Castle - a four-storey 16th-century limestone tower with finely carved stone quoins and pointed ogee-style arches. It was a stronghold of the O'Farrell clan, the Lords of Annaly, who held much of this country before the plantations. The O'Farrells held on through the upheavals of the 1600s but lost Mornin and its lands to the Jessop family in the 1700s after a run of court cases. The tower is ruinous and on private land; it is meant to be viewed from the roadway near its base, with the owner's permission sought before going closer. A short way north is Castlerea tower house, which belonged to the same Mornin estate.
One of the county's oldest GAA clubs
Moydow Harpers
Moydow Harpers is one of the oldest Gaelic football clubs in Longford, first formed in 1887 - among the first handful of clubs affiliated in the county - and named for the ancient Irish harpers, the professional musicians of the Gaelic and Norman-Irish nobility. The club played in the early Senior Championships around 1890, then faded in the 1940s as emigration emptied the parish. It reformed in 1975 and won a Junior championship in 1986. In January 2019 Moydow Harpers and Ardagh St Patrick's, which had been fielding a joint team since 2016, formally amalgamated to become the Ardagh Moydow club. For a parish this size, that is a long sporting line.