Wharton was the daughter of David George Arbuthnot and
Elisabeth, née Kemeys-Tynte, 10th Baroness Wharton. She was brought up in South Africa and was educated at the Herschel school for girls in Clarement, Cape Province. She was an advocate of animal welfare and became a vice-president of the
RSPCA in 1997. When her mother died in 1974, the Barony went into
abeyance. This was terminated in 1990, and Ziki Robertson became
11th Baroness Wharton. She was one of the 92 hereditary peers who were elected under the
House of Lords Act 1999 to continue as members of the Lords when most of the hereditary peers lost their seats. She married
Henry MacLeod Robertson and had four children including
Myles Christopher David Robertson, 12th Baron Wharton. She died of sporadic
Creutzfeldt–Jakob disease on 15 May 2000, aged 66. ==References==