Baron Lucy (anciently Lucie or Luci) is a title that has been created four times, three times by tenure and once by writ , which means that the peerages could descend through both male and female lines. The first creation by tenure came in 12th century with Chief Justiciar Richard de Luci

Richard de Luci

Richard de Luci was first noted as Sheriff of the County of Essex, then he was made Chief Justiciar of England.- Biography :His wife Rohese, who is named in several documents, was a sister of Faramus of Boulogne...

. In 1320, the title Baron Lucy was created in the Peerage of England

Peerage of England

The Peerage of England comprises all peerages created in the Kingdom of England before the Act of Union in 1707. In that year, the Peerages of England and Scotland were replaced by one Peerage of Great Britain....

 by writ of summons dated 15th may 1320 . The title Baron Lucy has been dormant

Dormant

Dormant means lacking activity. It can refer to:*Dormancy in an organism's life cycle*Dormant volcano, a volcano that is inactive but may become active in the future...

 since 1398.

Barons de Lucy (also Lucie or Luci) by tenure

• Richard de Luci
  Richard de Luci
  Richard de Luci was first noted as Sheriff of the County of Essex, then he was made Chief Justiciar of England.- Biography :His wife Rohese, who is named in several documents, was a sister of Faramus of Boulogne...
  
  , Governor of Faleis (Normandy), Lord of Diss, Chief Justiciar of England (died 1179)
• Richard de Luci, son of Geoffrey de Luci, 2nd and last Baron Lucy by tenure (died ante 1196)

Barons de Lucy/Luci (of Egremont) by tenure

• Reginald de Luci, Lord of Egremont (died ante 1199)
• Richard de Luci, Reginald's son, Lord of Egremont (died 1213)

Barons de Lucy (of Cockermouth) by writ (1320)

• Anthony de Lucy, 1st Baron Lucy (died 1343)
• Thomas de Lucy, 2nd Baron Lucy (1343–1365)
• Anthony de Lucy, 3rd Baron Lucy (1365–1368)
• Joan de Lucy, 4th Baroness Lucy (1368–1369)
• Maud de Umfraville, 5th Baroness Lucy, Countess of Angus (1369–1398). On her death (died 24 Dec 1398) the peerage became dormant.