Antoinette Sandbach Liberal Democrat politician (born 1969) (b. 1969) Parents Annie Marie Antoinette Eugenie van Lanschot Ian Lawrie Mackeson-Sandbach Children Sacha Mackeson-Sandbach Sam Mackeson-Sandbach Siblings Louise Catherina Mackeson-Sandbach Sara Emilie Mackeson-Sandbach Megan Annie Mackeson-Sandbach Partners Matthew R. Sherratt