I have Alexander (1806-1870) and Fatima Pan (or Parr) with 6 children. Peter (born 1837), Mary (born 1841) John Patrick born 1843, Alexander Duff born 1847, Annie born 1849, Isabella born 1854. All children were born in Demerara but all except John Patrick were sent to Scotland for their education. Mary, Alexander, Annie, and Isabella stayed in Scotland. John Patrick lived for a time in Demerara and eventually returned to Scotland with wife and children. I have reason to believe that Peter may have married and had 2 children in Demerara but nothing definite. I don't have a middle name for him, but that doesnt mean there isnt one.
Most of them lived in Greenock or Glasgow.