Catherine, Duchess of Cambridge is Drew Barrymore's 17th cousin once removed.
Drew Barrymore
→ John Drew Barrymore
her father → John Sidney Barrymore
his father → Georgiana Emma Drew
his mother → John Drew
her father → Francis Nelson Drew
his father → John Drew
his father → Francis Drew
his father → Susanna Drew
his mother → Margaret Drew
her mother → Rebecca Pomeroy
her mother → Samuel Pomeroy, Liutenant
her father → Edward Pomeroy
his father → Honor Rolle
his mother → John Rolle, Sir
her father → Eleanor Dacres
his mother → Henry Dacres, Esq
her father → Humphrey Dacre, 1st Baron Gillesland
his father → Joan d'Acre, Baroness Clifford
his sister → Matilda "Maud" de Clifford
her daughter → Dorothy Wrottesley
her daughter → Walter Wrottesley, Esq.
her son → Elizabeth Talbot
his daughter → Sir John Talbot, of Salwerpe and Grafton
her son → Sharington Talbot, MP
his son → Sharington Talbot
his son → Elizabeth Davenport
his daughter → William Davenport
her son → William Davenport
his son → Sarah Ashford
his daughter → Elizabeth Hobbes
her daughter → Christiana Davis
her daughter → Harriet Albina Lupton
her daughter → Olive Christiana Middleton
her daughter → Peter Francis Middleton
her son → Michael Middleton
his son → Catherine, Duchess of Cambridge
his daughter