Thomas Plumer Halsey, father of the first Baronet, was also a politician. Sir Lionel Halsey, fourth son of the first Baronet, was an Admiral in the Royal Navy.
John Halsey (born 1933), the 4th Baronet, does not use his title.
The heir presumptive is the present holder's second cousin Nicholas Guy Halsey (born 1948). His heir apparent is his son Guy Francis Johnston Halsey (born 1981).