Viscount Lonsdale in Westmoreland is in Viscountcies of England Alphabetically.
On 28th May 1696 John Lowther 1st Viscount Lonsdale [aged 41] was created 1st Viscount Lonsdale in Westmoreland. Katherine Thynne Viscountess Lonsdale [aged 43] by marriage Viscountess Lonsdale in Westmoreland.
On 10th July 1700 John Lowther 1st Viscount Lonsdale [aged 45] died. His son Richard [aged 6] succeeded 2nd Viscount Lonsdale in Westmoreland.
On 1st December 1713 Richard Lowther 2nd Viscount Lonsdale [aged 19] died of smallpox. His brother Henry [aged 19] succeeded 3rd Viscount Lonsdale in Westmoreland.
On 12th March 1751 Henry Lowther 3rd Viscount Lonsdale [aged 57] died unmarried. Viscount Lonsdale in Westmoreland extinct.