Margaret was baptised as Margaret although two sisters had 2 first names, or a first and second e.g. Anna Logan Beggs and Mary Lawson Beggs.Margaret was born July 31, 1852 and baptised Sept 5, 1852 in Kilbride Presbyterian.
The aforementioned marriage was found once with the name Marjery Mabel and once with the name Margaret Mabel. I have no previous knowledge of the second name Mabel.
The documents regarding John's will included his will, an inventory, a first accounting in May 1876 which shows bills paid (Administration of will), and then final accounting on Apr 5, 1880 when the monies were disbursed. Is that same as probate? John named all the children of his brother Thomas (my Thomas) and his brother Robert, with the ones who had emigrated getting a bigger chunk than the ones who stayed in Ireland. Anyway, it proves to me that I have the correct will for the correct family, as I have all the same names in my tree. Robert and Thomas were both deceased before final accounting and so their amounts went to their respective children.
Along with the will, I received a family tree that someone had compiled, possibly D.R. Jordon, as the tree was attached to a skeletal ancestral chart which was compiled by D.R.Jordon, a direct descendant of Robert Beggs and Jane Waddell (this Robert is the brother of John and my Thomas). Previously, I did not have the names of some of the spouses of Thomas' daughters. The tree does not have sources. On this TREE, the spouse of Margaret Beggs is given as Robert Graham. In the FINAL ACCOUNTING of the will in 1880, Margaret is still named as Margaret Beggs whereas her sister Mary who had married James Robinson in 1872, is named as Mary Robinson. This is why I assumed that Margaret's marriage was after Apr 1880. Another sister Anna Logan Beggs is listed under her maiden name as well and Anna did not marry until Dec 1889.
Note, the tree owner/compiler does not mention the middle name of Mabel and the tree does not give sources.
Thanks everyone for all your help.
Peggy