Hello Pauline, yes, your John is a Brother to my William 1749, married, Joney Christian,

had a look at the Andreas film today and read the marriage in 1770 of William Garret of the parish of Lezayre and Joney Christian,

both Sons of, William Garrett and Jane Crow,

I also found,

Baptism, Jane Crow 4 Feb 1728 Lezayre
John Crow and Ann Cottier

Marriage, John Crow and Ann Cottier 16 August 1719 ONCHAN

Marriage, John Garret and Isabel Kneale 30 Sep 1722 Lezayre
Children,
William Garret 1 Sep 1723 Lezayre
John Garret 11 Sep 1726 Lezayre

Averil