Hi Wow,
There is a "Henry McEndoo" recorded in Griffith's Valuation of Property in Ireland. He was renting a house and yard on Albert Street, in Derry city, from Alexander McIlwee, which had an annual rateable value of £7. This valuation was carried out just prior to the year 1858 in county Londonderry
Henry "McIndoo" is recorded in the Derry Almanac and Directory for 1870 as living at Bishop Street (without), in Derry city
In the Derry Almanac and Directory for 1903 and 1905 he is recorded as "Henry McIndoe", who was living at 48 Bishop Street, Derry city
Regards,
Brendan