Lucy Walter
| Lucy Walter | |
|---|---|
| Portrait by Peter Lely, c. 1650 | |
| Born | c. 1630 | 
| Died | 1658 (aged c. 28) | 
| Other names | Lucy Barlow (pseudonym) | 
| Partner(s) | Lord Robert Sidney Charles II of England Theobald Taaffe, 1st Earl of Carlingford Sir Henry de Vic Lord Thomas Howard | 
| Children | James Scott, 1st Duke of Monmouth Mary Crofts | 
| Parent(s) | William Walter Elizabeth Protheroe | 
Lucy Walter (c. 1630 – 1658), also known as Lucy Barlow, was the first mistress of King Charles II of England and mother of James, Duke of Monmouth. During the Exclusion Crisis, a Protestant faction wanted to make her son heir to the throne, fuelled by the rumour that the king might have married Lucy, a claim which he denied.