| Constituency | Dates |
|---|---|
| Carlisle | 1701 |
| Appleby | 2 May 1723 – 27 |
| Cumberland | 1754 |
Principal storekeeper of the Ordnance 1696 – 1712; director, South Sea Co. 1733 – 36; alderman, Carlisle 1739 – d.
In 1754 Lowther was returned unopposed. Dupplin’s list of 1754 classes him as ‘doubtful’. Lowther did much to develop his collieries and the harbour at Whitehaven; and, being parsimonious, at his death on 2 Jan. 1755 was, according to the Gentleman’s Magazine (1755, p. 42), ‘worth above a million’.
He bequeathed his Cumberland estates and a great fortune in cash and mortgages to his third cousin once removed, Sir William Lowther, 3rd Bt., of Marske and Holker, and his estates in Westmorland, Middlesex and Surrey, and the reversion of his Cumberland estates should Sir William die without male issue to his second cousin once removed, Sir James Lowther, 5th Bt., of Lowther.
