Cameron is married to Samantha Gwendoline Sheffield , the daughter of Sir Reginald Sheffield , 8th Baronet , and Annabel Lucy Veronica Jones ( now Viscountess Astor ) .
Head entity: samantha gwendoline sheffield Q2636948 4 5 6
Tail entity: viscountess astor Q4767671 25 26
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40