Analysis of information sources in references of the Wikipedia article "Mesne lord" in English language version.
The Normans...created sub or mesne manors, corresponding to their new partition of the estates.
...land was held of tenants-in-chiefs and mesne lords...Also significant was the partition of estates among co-heirs...
Potter Newton. Map 19 shows the whole of Gipton as forming part of the manor of Kippax, but this may be an ... Potter Newton The mesne lordship of Potter Newton was probably held in 1166 by Herbert de Arches, who held two knights' fees....
Chapter - LORD:Lord is also a title......Lord mesne is the owner of a manor and by virtue thereof hath tenants holding of him in fee, and by copy of court roll; and yet holds himself of a superior lord called Lord Paramount.
Mesne lord - A lord in the middle of the feudal hierarchy, i.e. a lord of a manor who held land from a superior lord and who let the land to a tenant.