Robert S. Todd Daguerreotype

[AussieMick]

Presbyterians hints at possibly Northern Irish or Scots ? Very unlikely to be French.
Choosing a name like Robert for a child points to Scots ... and William Wallace ... !!! well, I think you can see a Scots influence there.

According to Wikipaedia ... "Mary's paternal great-grandfather, David Levi Todd, was born in County Longford, Ireland, and immigrated through Pennsylvania to Kentucky. Another great-grandfather, Andrew Porter, was the son of an Irish immigrant to New Hampshire and later Pennsylvania. Her great-great maternal grandfather Samuel McDowell was born in Scotland, and emigrated to Pennsylvania. Other Todd ancestors came from England."