I think he was the Robert Lord with Thomas and Jane Stevenson in Lezayre in 1841, a miller's apprentice
1841 Kk Patrick census (Glenmoy): Thos Stephenson 30 miller; Jane 30; Thomas 11; Jane 7; William 2; John 6m; Robert Lord 18 miller ap

Later: I see Frances has also thought him to be the same Robert Lord.

Then I found him on the passenger list of the Stephen Whitney, which arrived in New York from Liverpool, August 14, 1843.
Stephen Whitney, Thomas Lord 38 mariner United States; Ellen Lord 38 United States; Robert Lord England 19 miller; Eliza Taggert 19 spinster England

He married, in Cuyahoga County, Ohio, August 14, 1847, Rosanna Crippen.

I don't find him in the 1850 census, but by 1860 he is in Erie County, Ohio, a blacksmith.

He married, in Oxford, Erie, County, October 31, 1870, Mary Ann Huntley. I believe her to be the widow of John Brown.

1860 Erie County, Oxford: Rob Lord 32 blacksmith England; Thomas 11 Ohio; Isabella 10 Ohio; Deborah 8 Ohio; Chas 6 Ohio, John Lugan 40 England

1870 Erie County, Oxford: Robert Lord 42 blacksmith IOM; Isabelle 21 Ohio; Mattie 3 Ohio

1880 Erie County, Oxford: Robert Lord 58 blacksmith IOM; Mary A. 61 England; Marrie Langwell 13 granddau Ohio

1900 Erie County, Oxford: Mary Lord June 1820 79 Wd England Immig 1857