 The couple had four other sons and two daughters

Sir Robert was made heir to the estate of General Sir John Cope, a successful veteran the Wars of the Spanish and Austrian Succession who had later fallen into personal misfortune following his defeat commanding the British force at the Battle of Prestonpans.Sir John had written in 1758 to Sir Robert's father, the first Osmaston baronet, of his intention to settle his estate on Sir Robert should his children by his mistress, Mrs Metcalf, die without issue.Sir John also wrote of abusive and malicious treatment by his family members which may have motivated his desire not to leave his property to his children or Cope relatives.