I read your post out of interest as my sister-in-law was a LeDrew, with roots in the Change Islands. I am puzzled by your dates given for WILLIAM HENRY LEDREW (1818-1837) and for ABRAHAM WILLIAM LEDREW (1853-1874).
You state that William Henry LeDrew married and had 6 children, yet you also state that he died at the age of 19 – how is that possible?
You state that Abraham William LeDrew married and had 12 children, yet you also state that he died at the age of 21 – how is that possible?
Just wondering before I go any further.