Crewe received a gentlemanly but unsettled education. Already aged 20 when he entered university, he left Cambridge within a few months for Lincoln’s Inn, where he spent barely a year. In June 1620, three days before he was knighted, he was licensed for three years’ travel on the Continent, and in the following November he enrolled in Padua University, though whether for study or to avoid the censure of the local Catholic authorities is unknown.
Crewe’s election for Downton to the 1624 and 1625 Parliaments was probably the work of the borough’s principal patron, the 3rd earl of Pembroke, who certainly nominated him at Callington in 1626. However, it is unclear whether he was in the earl’s service or was relying on contacts generated by his father’s prominence in the judiciary.
Little has been ascertained about Crewe’s career outside Parliament. Judging from the baptismal records of his children, he resided primarily with his father in Cheshire and Westminster.
