Colonel Sir John Lowther (c.1628 – March 1668) was an English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 landowner, at Hackthorpe

Hackthorpe

Hackthorpe is a village in the Eden District, in the county of Cumbria, England.- Location :It is located on the A6 road just south of Lowther which the two settlements could be considered to be conjoined, and about four miles from the town of Penrith...

, the eldest son and heir of Sir John Lowther, 1st Baronet and Mary Fletcher.

He first married, in 1665, Elizabeth Bellingham, daughter of Sir Henry Bellingham, 1st Baronet

Sir Henry Bellingham, 1st Baronet

Sir Henry Bellingham, 1st Baronet was an English politician and lawyer, cavalier and baronet.He was the son of Sir James Bellingham and Agnes Curwen, daughter of Sir Henry Curwen. Bellingham was educated at Queen's College, Cambridge in 1609, and admitted to the Middle Temple a year later...

. They had two children:

• John Lowther, 1st Viscount Lonsdale
  John Lowther, 1st Viscount Lonsdale
  John Lowther, 1st Viscount Lonsdale, PC, FRS , known as Sir John Lowther, 2nd Baronet, from 1675 to 1696, was an English politician....
  
   (1655–1700)
• Mary Lowther, married her third cousin twice removed, John Lowther of Dantzic

By his second marriage to Mary Withins, he had one (posthumous) son:

• William Lowther
  William Lowther (1668-1694)
  William Lowther was an English Member of Parliament, the posthumous son of John Lowther and his second wife, Mary Withins.-References:*...
  
  (1668–1694)

He predeceased his father and did not succeed to the baronetcy.