William Borthwick, 3rd Lord Borthwick

Sir William Borthwick, 3rd Lord Borthwick (d. May 20, 1503) was a Scottish nobleman, ambassador, and Master of the King's Household in 1485. [ Pine, L.G., FSA Scot, &c.,"The New Extinct Peerage 1884-1971", London, 1972: 32, ISBN 0-90045523-3] [ Anderson, William, "The Scottish Nation", Edinburgh, 1867, vol.ii, p.339, has him as being killed at the battle of Flodden but this is incorrect - see "Complete Peerage" and Pine (1972)]

The son of William Borthwick, 2nd Lord Borthwick (d.c1483), the 3rd Lord Borthwick was knighted before his father. As Sir William de Borthwick, Knt, he appeared as defender on behalf of his father in an action of debt on July 4, 1476, when judgement was given against him. They appeared again together in an action on October 16, 1479, and this time had a judgement in their favour. [ Anderson, William, "The Scottish Nation", Edinburgh, 1867, vol.ii, p.339 ]

He was one of the guarantors of the treaty with England dated September 20, 1484, [ "Foedera", xii, p.241] [ Bain, Joseph, FSA Scot, &c., "Calendar of Documents Relating to Scotland", Edinburgh, 1888, vol.iv 1357-1509, addenda 1221-1435, no.1505, p.308 ] and a Conservator of other treaties on March 26, 1494 [ Bain, 1888, p.418] September 30, 1497, and July 12, 1499. [ Anderson (1867), vol.ii, p.339] [ Pine, L.G., FSA Scot, &c.,"The New Extinct Peerage 1884-1971", London, 1972: 32] )

William, Lord Borthwick, as superior of the lands of Nenthorn, Berwickshire, granted a charter of them to his second son, Alexander Borthwick upon the resignation dated June 27, 1495 of James Wilson, the previous feuar. [Nisbet, Alexander, "A System of Heraldry" &c., volume 2, 1722, facsimile edition, Edinburgh, 1984, "Appendix", p.106]

Lord Borthwick was succeeded by his son and heir, William Borthwick, 4th Lord Borthwick.

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