Mary Taylor info?

[twolastnames]

Can anyone help me or have any suggestions on the Taylor name.
I am looking for any infor on

Mary Millar Taylor
b-1836 I believe Sligo
IGI puts her birth at 1843 according to the marriage info
M-1865 Feb 23 in Ballymote, Sligo, Ireland according to IGI

She married
John Kerr
b-1837 in Argyll Scotland
Parish- Dunoon and Kilmun

Their children were
Jane Taylor Kerr b-1866
George Taylor Kerr b-1866
Cathrine Mercer Kerr b-1867
Richard Taylor Kerr b-1869


I had Mary's fathers name at John according to my family info
but on the IGI marriage info they have his name as Rick

I am a little confused,
Any help would be appreciated.
Thanks
Trevor