Question: When is William Bentinck, 2Nd Duke Of Portland's father's birthday?
Sentence (from "Henry Bentinck, 1st Duke of Portland"): Henry Bentinck, 1st Duke of Portland (17 March 1682 – 4 July 1726), of Titchfield, Hampshire, styled Viscount Woodstock from 1689 until 1709, was a British Whig politician who sat in the English and British House of Commons from 1705 until 1709 when he succeeded to the perage as Earl of Portland.
Relevant evidence: Yes