I'm following the trail of a group of Hendersons that lived in Dunrossness in the Shetland Islands. The earliest Henderson that I have is Robert Henderson, who I have born in 1809 in Dunrossness. He married Margaret Smith, born in c. 1812/1813 in Dunrossness. I know of one child, Oliver, born in 1837, who married Margaret Mail (b. 1838) in 1859. I have 1881 census information showing the two above listed Margarets living in Lerwick, Shetland Islands, with 4 of Margaret Mail's children, one of whom I have a birth certificate for. The two adult men are not listed, as is what I believe to be the oldest son of Oliver and Margaret, Robert Henderson (my great-great grandfather), who would have been 20-21 when the census was taken. 3 years later, I know Robert to have had a son, Oliver Mowbray, my great-grandfather. I also have quite a bit of other related information for the Shetland Islands, especially related to Margaret Mail and her ancestry and some of her cousins. Much of this I stumbled upon yesterday and am still trying to work into my database. I welcome any and all queries.