Who was Mr. Garrow?

Mr. Garrow was a lawyer involved in trials at the Old Bailey. 

As I wanted a trial scene in the Old Bailey, I chose the period of 1700 for my purpose; but being shamefully ignorant of my subject, and my husband confessing to little more knowledge than I possessed, a London bookseller was commissioned to send us everything he could procure bearing on Old Bailey trials. A great package came in response to our order, and very soon we were both absorbed, not so much in the trials as in following the brilliant career of a Mr. Garrow, who appeared as counsel in many of the cas