« Reply #6 on: Friday 30 August 19 10:55 BST (UK) »
Given the combination of names it may be worth looking for marriages in the Greenock area around the right time for Gardner-Henderson, Gardner-Houston or Henderson-Houston. If you can find a possible couple then you could build out their extended family to see if you can find any trace of your Patrick.
Crackett, Cracket, Webb, Turner, Henderson, Murray, Carr, Stavers, Thornton, Oliver, Davis, Hall, Anderson, Atknin, Austin, Bainbridge, Beach, Bullman, Charlton, Chator, Corbett, Corsall, Coxon, Davis, Dinnin, Dow, Farside, Fitton, Garden, Geddes, Gowans, Harmsworth, Hedderweek, Heron, Hedley, Hunter, Ironside, Jameson, Johnson, Laidler, Leck, Mason, Miller, Milne, Nesbitt, Newton, Parkinson, Piery, Prudow, Reay, Reed, Read, Reid, Robinson, Ruddiman, Smith, Tait, Thompson, Watson, Wilson, Youn