Hello Avril, I want to get the full will from the museum to see if there are any other clues. I found the marriage of Thomas Garret and Jane Land 5 May 1739 at Lez. Think that is a mistranscription, should be Laud.Also found their children Thomas 21 Feb 1739 Lez, John 30 June 1745 Lez, but I also could not find the cris of dau Jane. I didn't find William either but the Ramsey Wm 05 May 1753 you found with father Thos Garret looks a good possibility John and William are under the age of 21 at their fathers death. Jane is of age. The eldest son Thomas must have died as he is not mentioned in will. I havent found him in lez but will check Maughold. I have got the will of Thomas Garret February 1777 Lez he names his children Thos, Jane, Ann with dau Catherine exectx. Wife alive but not named.