The Cockayne (or Cokayne) family settled at Ashbourne in the twelfth century. Ancestors of the baronet included Sir John Cockayne, steward to John of Gaunt, Sir Edmund Cockayne, slain at the Battle of Shrewsbury in 1403. and Sir John Cokayne, a turbulent Lancastrian knight who represented Derbyshire nine times in Parliament.
Sir Aston Cockayne was the first baronet and last of his family line.
The baronetcy passed to the senior line of the Cockayne family and to Aston's first cousin, once removed (son of his first cousin): Caleb Cockayne.
The family fortunes ruined, the Cockayne family ceased using the title in their day-to-day lives, although, the Baronetcy is still claimed by descendants of the Cockayne family today.
Cockayne of Ashbourne (1642)
- Sir Aston Cockayne, 1st Baronet
- Ashbourne Hall in Derbyshire served as the Cockayne Family seat until its sale in 1671.
- Pooley Hall, near Polesworth, Warwickshire was the family's country retreat until its sale at the end of the 17th Century.
- The Cockayne family bought the lease of Sturston Hall, near Ashbourne, Derbyshire from their relations, the Kniveton family, in 1650. It was sold to Francis Meynell.
- Leigh Rayment's list of baronets – Baronetcies beginning with "C" (part 3)