Complex sentence: Later, having married Eliza Kaye, the daughter of the "Builder of Huddersfield" architect Joseph Kaye, set up the law firm at 62 Whitefriargate in 1850.
Split into simpler sentences: Later, having married Eliza Kaye, the daughter of the "Builder of Huddersfield" architect Joseph Kaye. John set up the law firm at 62 Whitefriargate in 1850.