William Annesley, 1st Viscount Glerawly (1710 – 2 September 1770) was an Irish politician and noble.

Lord Glerawly was the sixth son of Francis Annesley and Elizabeth Martin. Through his father, Lord Glerawly was the grandson of Francis Annesley, 1st Viscount Valentia

Francis Annesley, 1st Viscount Valentia

Francis Annesley, 1st Viscount Valentia PC was an English statesman during the colonisation of Ireland in the seventeenth century. He was a Member of Parliament for both the English and Irish houses, and was elevated to the Irish peerage as Baron Mountnorris, and later Viscount Valentia.-Rise to...

 and thus his descendants are in the remainder to the title Viscount Valentia

Viscount Valentia

Viscount Valentia is a title in the Peerage of Ireland. It has been created twice. The first creation came in 1621 for Henry Power. A year later, his kinsman Sir Francis Annesley, 1st Baronet, was given a "reversionary grant" of the viscountcy, which stated that on Power's death Annesley would be...

. Anneyley sat as Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 (MP) in the Irish House of Commons

Irish House of Commons

The Irish House of Commons was the lower house of the Parliament of Ireland, that existed from 1297 until 1800. The upper house was the House of Lords...

 for Midleton

Midleton (Parliament of Ireland constituency)

Midleton was a constituency represented in the Irish House of Commons until 1800. Incorporated by Charter, 1671 whereby it was granted to Sir John Brodrick with a Corporation sovereign, two bailiffs and 12 burgesses. It was disenfranchised at the Act of Union and compensation of £15,000 paid to...

 between 1741 and 1759. He served as High Sheriff of Down

High Sheriff of Down

The High Sheriff of Down is the Sovereign's judicial representative in County Down. Initially an office for lifetime, assigned by the Sovereign, the High Sheriff became annually appointed from the Provisions of Oxford in 1258. Besides his judicial importance, he has ceremonial and administrative...

 in 1750.

On 16 August 1738, Lord Glerawly married Lady Anne Beresford, a daughter of Marcus Beresford, 1st Earl of Tyrone

Marcus Beresford, 1st Earl of Tyrone

Marcus Beresford, 1st Earl of Tyrone , known as Sir Marcus Beresford, 4th Baronet until 1720 and subsequently as The Viscount Tyrone until 1746, was an Irish peer, freemason and politician.-Background:...

 and with her had at least three children:

• Francis Annesley, 1st Earl Annesley (1740-1802)
• The Hon. Catherine Annesley (bef. 1745-1770)
• Richard Annesley, 2nd Earl Annesley
  Richard Annesley, 2nd Earl Annesley
  Richard Annesley, 2nd Earl Annesley PC , styled The Honourable from 1758 to 1802, was an Irish politician and noble.Lord Annesley was the second son of William Annesley, 1st Viscount Glerawly and Lady Anne Beresford...
  
  (1745-1824)