Locock baronets  The Locock Baronetcy, of Speldhurst in the County of Kent and of Hertford Street in Mayfair in the County of Middlesex, was a title in the Baronetage of the United Kingdom. It was created on 8 May 1857 for Charles Locock, First Physician-Accoucheur (obstretrician) to Queen Victoria. The title became extinct on the death of the third Baronet in 1965.