The second son, Walter, had a charter of various lands in the barony of Lintrathen from Archibald, earl of Douglas, which was confirmed by Robert, duke of Albany, on 20 Nov. 1406. He had also a ratification from Alexander Ogilvy of Ogilvy of the lands of Wester Powris on 2 Aug. 1428. On 8 June 1424 he had a safe conduct for a year to go to Flanders (Cal. Documents relating to Scotland, 1357-1509, entry 962). After the arrests of the nobles at Perth in 1435 [see under James I of Scotland] he was made lord high treasurer, and he was also one of the jury who in the same year sat at the trial at Murdoch, duke of Albany and his relatives. In 1426 he founded and endowed two chaplainries in the church of Auchterhouse for the safety of the souls of the king and queen, and of those who fell at the battle of Harlaw. With other Scottish commissioners, he had on 24 Jan. 1429-30 a safe-conduct to meet the English at Hawdenstank to redress complaints (ib. entry 1032). On 11 Dec. 1430 he was appointed one of the special envoys to treat for the prorogation of a truce and a final peace with Henry, king of England (ib. entry 1037), and on 15 Dec. he signed a truce with England for five years from 11 May 1431 (ib. entry 1038). In 1431 he was appointed treasurer of the king's household, and was succeeded in the office of lord high treasurer by John Myrton. He was one of those who, in 1431, attended the Princess Margaret into France on her marriage with the dauphin. By warrant of the king he erected Airlie tower or fortalice of Airlie, Forfarshire, into a royal castle. He died in 1440. By Isabel de Durward, heiress of Lintrathen, he had two sons and a daughter. The sons were: Sir John of Lintrathen, his heir, whose son, Sir James Ogilvy of Airlie, was created by James IV on 28 April 1491 a peer of parliament by the title of Lord Ogilvy of Airlie; and Sir Walter of Auchleven, whose eldest son, Sir James, was ancestor of tbe Ogilvys, earls of Findlater, and whose second son. Sir Walter Ogilvy of Boyne, was ancestor of the lords of Banff. The daughter, Giles, was married to Sir William Arbuthnott of Arbuthnott.
[Cal. Documents relating to Scotland; Crawfurd's Officers of State. pp. 356-7; Douglas's Scottish Peerage, ed. Wood, i. 29.]
O'GLACAN, NIAL (fl. 1629–1655), physician, was a native of Donegal, and received some medical education in Ireland, probably (Preface to Tractatus de Peste) from a physician of one of the hereditary medical families [see MacDonlevy], thus learning the work of an apothecary and a surgeon, as well as the Galenical knowledge necessary for a physician. In 1628 he treated patients in an epidemic of plague in the towns of Figeac, Fons, Capdenac, Cajarc, Rovergue, and Floyeac, between Clermont and Toulouse. He was encouraged in his work by the Bishop of Cahors; and when the epidemic appeared in Toulouse he went thither, and was appointed to the charge of the xenodochium pestiferorum, or hospital for those sick of the plague. In May 1629, while residing in the hospital, he published ‘Tractatus de Peste seu brevis facilis et experta methodus curandi pestem authore Magistro Nellano Glacan Hiberno apud Tolosates pestiferorum pro tempore medico.’ It was printed by Raymond Colomerius, the university printer, and is dedicated to Giles de Masuyer, viscomte d'Ambrières. In the preface he speaks of the fame of Ireland for learning in ancient times, and he notices the credit of the Irish physicians. The work itself is a piece of formal medicine, without cases or other observations of interest.
O'Glacan remained in Toulouse, was appointed physician to the king, and became professor of medicine in the university. In 1646 he still describes himself as a professor at Toulouse, but in that year removed to Bologna, where he also gave lectures, and published ‘Cursus medicus, Prima pars: Physiologica,’ in six books. The second part, ‘Pathologica,’ in three books, and the third part, ‘Semeiotica,’ in four books, were published at Bologna in 1655. Part i. has two curious prefaces, one ‘lectori benevolo,’ the other ‘lectori malevolo.’ Commendatory verses are prefixed, and among those of part ii. are some by Gregory Fallon, a Connaughtman, who was at Bologna, and by another countryman, the Rev. Philip Roche, S.J. Fallon says that O'Glacan is in Italy what Fuchsius was in Germany. The ‘Cursus’ begins with a discussion of the utility of medicine, of its nature, and of the several schools of medical thought, and then proceeds to lay down the whole system of the Galenists, without additions from modern practice. In 1648 he edited, with the Bishop of Ferns and Sir Nicholas Plunket, ‘Regni Hiberniæ ad sanctissimum Innocentem X Pont. Max. Pyramides encomiasticæ,’ a series of laudatory poems in Latin addressed to the pope. The preface is by O'Glacan, and he mentions as his friends in Italy Francis O'Molloy [q. v.], the author of ‘Lucerna Fidelium;’ Peter Talbot, Gerard O'Fearail, and John O'Fahy. The only other ascertained incident of his life is that he visited Rome.
[Works; Codex Medicamentarius seu Pharmacopœa Tolossus, Toulouse. 1648.]