This word, which appears to be a contamination of quant1 and cumbien, is currently only attested in Man Lang ANTS in Anglo-Norman, but according to the FEW (2/ii,1418b) also appears in sixteenth-century Picard (as quambien).
(
1396; MS: s.xivex
)
Au marché [...]: Belle dame, pour quantbien me donnrez vous cecy? [...] Vel sic: Quantbien me costera ces trois anes de rivere?
38.7-8
quantbien a il soné de l'oriloge?
1what time is it?:
(
1396; MS: s.xv1
)
Ore, beale dame, me ditez vous quantbien a il sonee de l' oriloge com vous pensez?
8.24
quantbien i a de... a...?
1how far is it from... to...?:
(
1396; MS: s.xivex
)
quantbien y a il d'illoques a Aurilians?
44.13
quantbien (1396)