Skelly, from the Norse thence AngloSaxon, Shelly "Near a thunderous river." Believed to have arrived (in Britain) with the Vikings, 8th-11th Century.-Winnie Wilkinson
Skelly, is a whitefish of certain lakes in the Lakes District in England.(perhaps from dialect skell or scale & so called because of its large scales.)--Collins Dictionary.
Skelly, a 2-syllable boy's name of Gaelic origin,
means: Historian; one who tells stories.
Skelly:To look sideways or squint.
Skelly:A quick look;glance.
Sceolgh:a squint -- Scottish and Northern English dialect.
Skelly-Eyed'; cross-eyed.Probably Old Norse, from SKJALGR wry; related to Old English.