Steel family in South Uist

We have no knowledge of the family of John Steel who was born on South Uist around 1766, other than that he had a brother Donald who went to Prince Edward Island in the Gulf of St Lawrence around 1805.
Brother David of St Alphonsus Seminary in Woodstock, Ontario, also known as Angus Steel, apparently said his family escaped from the Island of Coll during the persecution [of Catholics?]. Their name was McLean and they were headed by South Uist on a boat captained by a Steele and took his name as they feared trouble under theirs.
This has come from two sources: a private correspondence with with Steele descendants in Canada in 1957; and also Notes of South Uist Families by Dr A McLean in Transactions of the Gaelic Society of Inverness Vol LIII 1982-4, which appears to also come from Brother David.

see From The Outer Hebrides to Prince Edward Island & Wallace, Nova Scotia by Bill Lawson