Presumably from go- (“diminutive suffix”) + nans (“valley”). Alternatively, borrowed from Welsh golan[1] under influence from nans.
golans m (plural golansow)
- A small valley.
- ^ R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “golan”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
