Oh wow hi Scott!
I am away from home at the moment so no records to refer to, but the names Iain, Hugh or Ewen come to mind as regards the father of John Ross who was married to Margaret (called "Peggy" by her family) MacDonald.
Iain would make most sense as it follows the Gaelic tradition of naming the grandchild after the grandparent...(but of course that could include Margaret's father too!).
I say "Ewen" because we are in touch with some Canadian Ross's that also came from Kendram and have pinpointed a "Ewen" in their ancestry from the mid 1700s. And I say "Hugh" because if I recall correctly, that name was on the rent records for croft #4 Kendram (but there were Ross's at #4 and #5 Kendram in the 1800s...they will have been related, but not exactly sure who were brothers and who were cousins beyond the generation of John & Margaret).
I recall my granny referring to ur great grandfather as "uncle Hughie". He was 4 years older than my great seanair Alasdair (Alexander); and yes, I am very aware of their sister Mary who was a maid to Francis Tolmie (we have, or had, Ethel Bassin's book "The Old Songs of Skye"). She remained close to her siblings as she was unmarried, and my granny was 21 when she came home to Kendram to die. We have photos of her.
You know those 3, plus their oldest brother Iain who died aged 24, were the product of Ranald's first marriage to Dorcas MacKinnon? Our great great grandmother died the year after my great grandfather was born. Ranald's then married a much younger woman Ann MacLeod and they had 4 daughters and a son (John) together. Our family was close to the family of that John, as they lived a short walk away from my granny...and his two daughters never married. One daughter was Annie Ross just as my granny was named.
Anyway, enough blethering. Are u still in Skye Scott? What children did Hugh go on to have? It would be lovely to continue this conversation. I shall PM you my email address. I've set up a family Facebook group "The Rosses of Skye (Kilmaluag)" which has descendants on it from as far afield as Australia.
Laters,
Amina