Sarah Ann Barnett

....William (Barnett) was the eldest son and was 8 years old when they settled in Atawhai. With limited education he worked on a farm until a young man, when he went to Nelson to work. In 1856 he met a married Sara Ann Plumridge who was a half sister to Queen Victoria. Sara Ann's father was a Colonel in the Imperial Guards and was sent out to Nelson with his wife and family and a detachment of Guards to guard the residence of the first Governor-General of Nelson and New Zealand, Edward Gibbbon Wakefield, and the provincial buildings.On their marriage William And Sara Ann received a dowry of 300 pounds to settle their family permanently in New Zealand. A farm was bought at East Takaka for the newly weds .....

Reference "The Descendants of David and Elizabeth Clark" complied by Re D Evans and published by Evagean Publishing September 1992 p 461,

Maria Plumridge (nee Cross) daughter of Prince Edward, Duke of Kent and Strathearn who was the father of Queen Victoria so she was Victoria's 1/2 sister.