A younger son of a minor armigerous family, Astell probably trained at Gray’s Inn, where he had chambers, although his formal admittance as a student is not on record. He acquired sufficient knowledge to be styled ‘learned in the laws of England’.
On 27 Oct. 1621 Astell wrote to his cousin Sir William Smith that his youngest daughter Ursula had received ‘the best education that I and my wife can give her in the place of a waiting woman’, and made arrangements to send her to London.
