Uncle Halliday

This is a cropped face from a photo in which there is a young woman my maternal great-grandmother, Maria Estelle Williams. On the back is written 'Uncle Halliday'. They are both mysteries to the family as to their families, etc. She was said to have come from 'out West', which in 1853 when she was born could have been anywhere west of New York State. It is possible that she was born in CT though. On her married licence it states that she was 'from Rome (or Rouse) NY'. Handwriting very bad. Where he comes from is a total mystery.

Does anyone know anything about him?