William Borthwick, 3rd Lord Borthwick Scottish nobleman, ambassador and Master of the King's Household (d. 1503) Parents William Borthwick, 2nd Lord Borthwick unknown wife (?) Children Gavin Borthwick of Fenton Catherine Borthwick William Borthwick, 4th Lord Borthwick Siblings Mary Borthwick Margaret Borthwick Adam Borthwick Alexander Borthwick Catherine Borthwick Agnes Borthwick