1891 has him born Manchester:
1891 RG12; Piece: 3232; Folio 99; Page 20
3 Bradley Street Manchester (Ancoats)
Thomas Robinson 49 yrs Baker
Sarah 45 yrs confectioner
Sarah 17 yrs
Minnie 14 yrs
Wllen 9 yrs
with lodgers Pearson and Barker families
all born Manchester
No Maud

thought if we could find her there may be a clue.