Hi
There is a family tree on ancestry complete with baptism, marriage & death dates of Israel, born 1871 in Glamorgan, married Margaret Bowcott and died 1946. If the tree is correct, Israel is descended from -
Evan Rees 1838 Mertyr Tydfil, Glamorgan
William Rees 1784 Llanarry, Glamorgan
Thomas Rees 1756 Llanarry, Glamorgan
Lewis Rees 1733 Penmark, Glamorgan
I haven't had time yet to look at census records, and there is a marriage record for Israel Rees 1734 in Carmarthen, but what info do you have that suggests the 1734 Israel is an ancestor of the 1871 Israel?