A while ago, I consulted a CD (268) of Scottish Immigrants to North America, 1600s-1800s, Scots Colonists: America, 1612-1783, Surnames M-N. from Genealogy.com.

I found these McLeas on p. 214 (and have no further information, including what the numbers mean). The first two were 'transported' (against their will) for the crimes of being a Jacobite or a thief, respectively. The last appears to be voluntary, and just before the American Revolution!

1. McLea, Dougal, b. 1731, Jacobite, tr. 1747, fr. Tilbury. (P.3.142)(MR177)
2. McLea, John, flesher, thief, res. Glasgow, tr. Sept 1775, fr. Glasgow to West Indies. (SM.37.523)
3. McLea, William, b. 1746, laborer, res. Islay Argyll, sh. Apr 1775, fr. Greenock to N.Y., in Lilly. (PRO.T47.12)

Hope this is of use to someone!

Kyle=