Sources

Baile-nan-Granndach, Am Fèillire 1875, 15, 17
Baile nan Granndach.. often referred to locally as Am Baile Ùr: Place-Names of the Cairngorms National Park

Strathcromble G. Srath chrombail, ‘winding strath’ Crom, ‘bent’, here develops a ‘b’ before the suffix, as it does in Aber-crombie, Dalcrombie. Similarly from ‘ lorn ‘ we get Innis-lombaidh (Bosskeen), and ‘ lombar,’ a bare place. The last example suggests that the form ‘ crombail’ may have arisen by dissimilation from ‘ crombair’ parallel to ‘lombar’. The Gaelic for Grantown-on-Spey is the same.: Watson 1904, 169 [It is hard to know what Watson means here, unless he was referring to Cromdale. This comment is not in the Northern Chronicle version.]

In Rothiemurchus and in Tulloch, it was known as the Bail Ur, or the new town. “Bha mi’mhain aig a’ Bhail Ur an diugh”, they would say, or ”I’m making for the Valoor”.In Nethy Bridge, and about Cromdale, it was Bail na Granndach.: Gaelic Place-names in Strathspey, 323