[1] Deciding to adopt the law as profession, Carew studied at Leuven, and was there and at other universities on the continent for twelve years.
Carew then entered on practice in the court of arches, and ultimately became master in chancery, a position which he held for many years, being knighted on 23 July 1603, before the coronation of James I.
His wife was Alice, eldest daughter of Sir John Rivers, Knight, Lord Mayor of London, and widow of one Ingpenny; by her, Carew had numerous children.
There was a rumour in January 1613 that he would be cheated of eight or nine thousand pounds through the fraud of a person in whom he had placed confidence, and a little later his eldest son was engaged in a quarrel with one Captain Osborne, who was then killed.
[2] He was buried at St. Dunstan's-in-the-West on 2 August 1618, his career being described in a memorial tablet in the church, and his name being kept in remembrance by a bequest for the poor of the parish.