Viscount Alanbrooke, of Brookeborough in the County of Fermanagh, is a title in the Peerage of the United Kingdom

Peerage of the United Kingdom

The Peerage of the United Kingdom comprises most peerages created in the United Kingdom of Great Britain and Ireland after the Act of Union in 1801, when it replaced the Peerage of Great Britain...

. It was created on 29 January 1946 for Field Marshal

Field Marshal

Field Marshal is a military rank. Traditionally, it is the highest military rank in an army.-Etymology:The origin of the rank of field marshal dates to the early Middle Ages, originally meaning the keeper of the king's horses , from the time of the early Frankish kings.-Usage and hierarchical...

 Alan Brooke, 1st Baron Alanbrooke

Alan Brooke, 1st Viscount Alanbrooke

Field Marshal The Rt. Hon. Alan Francis Brooke, 1st Viscount Alanbrooke, KG, GCB, OM, GCVO, DSO & Bar , was a senior commander in the British Army. He was the Chief of the Imperial General Staff during the Second World War, and was promoted to Field Marshal in 1944...

. He had already been created Baron Alanbrooke, of Brookeborough in the County of Fermanagh, on 18 September 1945, also in the Peerage of the United Kingdom. Brooke was the sixth son of Sir Victor Brooke, 3rd Baronet

Victor Brooke

Sir Victor Alexander Brooke, 3rd Baronet , was an Anglo-Irish naturalist and baronet. He was the father of Field Marshal Sir Alan Brooke, 1st Viscount Alanbrooke, and grandfather of Sir Basil Brooke, 1st Viscount Brookeborough, third Prime Minister of Northern Ireland.Brooke, whose family were...

, and the uncle of the Prime Minister of Northern Ireland Basil Brooke, 1st Viscount Brookeborough

Basil Brooke, 1st Viscount Brookeborough

Basil Stanlake Brooke, 1st Viscount Brookeborough, Bt, KG, CBE, MC, PC, HML was an Ulster Unionist politician who became the third Prime Minister of Northern Ireland in 1943 and held office until 1963....

. Brooke was succeeded by his half-brother, Thomas, who was unmarried and had no children. Since 1972 the titles are held by Alan Brooke's son, also named Alan. Lord Alanbrooke is also in remainder to the Brooke Baronetcy of Colebrooke, a title held by his kinsman Alan Brooke, 3rd Viscount Brookeborough.

Viscounts Alanbrooke (1946)

• Alan Francis Brooke, 1st Viscount Alanbrooke
  Alan Brooke, 1st Viscount Alanbrooke
  Field Marshal The Rt. Hon. Alan Francis Brooke, 1st Viscount Alanbrooke, KG, GCB, OM, GCVO, DSO & Bar , was a senior commander in the British Army. He was the Chief of the Imperial General Staff during the Second World War, and was promoted to Field Marshal in 1944...
  
   (1883–1963)
• Thomas Brooke, 2nd Viscount Alanbrooke
  Thomas Brooke, 2nd Viscount Alanbrooke
  Thomas Brooke, 2nd Viscount Alanbrooke . He was the son of Field Marshal Alan Francis Brooke, 1st Viscount Alanbrooke....
  
   (1920–1972)
• Alan Victor Harold Brooke, 3rd Viscount Alanbrooke
  Alan Brooke, 3rd Viscount Alanbrooke
  Captain The Rt. Hon. Alan Victor Harold Brooke, 3rd Viscount Alanbrooke, RA , succeeded to the viscountcy on December 19, 1972 upon the death of his half-brother....
  
  (b. 1932)

There is no heir to the titles.