Full Idea
The most popular reading of Locke is that he endorses multiple, coinciding, material substances. In a human being, for example, there would be a body, a man and a person.
Gist of Idea
Locke may accept coinciding material substances, such as body, man and person
Source
report of John Locke (Essay Conc Human Understanding (2nd Ed) [1694], 2.27) by Robert Pasnau - Metaphysical Themes 1274-1671 30.4
Book Reference
Pasnau,Robert: 'Metaphysical Themes 1274-1671' [OUP 2011], p.721
A Reaction
Since he says that substances can only coincide if they are of different types then this may be a misreading, as Pasnau implies.