William Sykes (1500–1577) migrated from Cumberland to the West Riding of Yorkshire, where he and his son became wealthy cloth traders. Daniel Sykes (b.1632) was the first member of the family to begin trading in Hull and made a fortune from shipping and finance. Richard Sykes (1678–1726) concentrated on the flourishing Baltic trade in pig iron and the wealth of the family was built on this in the first half of the eighteenth century. His son Sir Richard Sykes (1706–1761) married Mary Kirkby, sister of Mark Kirby, and heiress to the Sledmere estate.