Lathrowsmyre 1599 RMS vi no. 874 [see ELI Introduction, Elie in 1599]
lie Lathrowismyre 1615 RMS vii no. 1213 [‘marsh and bog’ (maresiam et paludem) called the Lathron’s Myre, as much as lies to the west of certain march stones; see ELI Introduction, Elie and Ardross, for context]
maresio Lathrowismyre nuncupato 1626 Retours (Fife) no. 415 [‘in the marsh called Lathron’s Myre’ in the barony of Ardross (Ardros)]
marresium vocat<um> Lathrousmyre 1643 RMS ix no. 1470
East Lathoris 1786 Sasines no. 1401
piece of land lying in the Lathoris 1787 Sasines no. 1569
Latharras 1789 Sasines no. 4823 [‘half a peat-room at the land end of Latharras, and quarter of a peat room in Hattit Myre’]
the Landsend of Lathunies 1801 Sasines no. 5801 [peatroom on east side of]
East Lathorns 1818 Sasines no. 11906 [‘Robert Traill ... in the lands called East Lathorns, half an acre of arable land above the loch of Kilconqhuhar, the east part of the Myre of Kilconquhar ... being part of the lands of Kilconquhar’]
the Moss called Lathron’s Myre 1870 Elie Disposition fo 44v
? + Sc mire
This may contain a word related to OIr lathrach ‘puddle, muddy pool’, which itself is related to G loth ‘mud, marsh’, found for example in Lothrie Burn LSL (q.v.; see also Elements Glossary, PNF 5, under loth).
Its appearance amongst the names of wet-lands south and south-east of Kilconquhar Loch, and its frequent combination with Sc mire, would support this tentative analysis. Alternatively, the earliest as well as the most recent forms might suggest a personal name such as *Lathrow. However, no such name is found in Black 1946.
The development of the n may have been due to the assimilation of the first element to Sc laidron, ladron(e), la(i)therin etc ‘slattern, prostitute; rascal’ (see CSD, with cross-reference to SND and DOST).
From its occurrence in RMS vi no. 874 (see ELI Introduction, Elie in 1599) it must be near Bowhouse ELI, hence the above NGR.
This place-name appeared in printed volume 3