Hi Jeremy,
my husband's gg-aunt Mary Ann Quaintrell had several children by Thomas Pyne. They were unlikely to have married because I have found a marriage for Mary Ann to a Henry Lumley on 25 Apr 1886.
Henry seems to be living with an Emma/Emily in Plaistow in 1901 and 1911 with their own children.
Mary Ann was "widowed" by the aged of 42 which would fit with the Thomas Pyne who died in 1908.
Here are Mary Ann & the children in 1911
4 Ion Square Bethnal Green, London
PYNE, Mary Ann Head Widow F 41 1870 Fancy Box Maker London Bethnal Green
PYNE, Thomas Son Single M 15 1896 Chemist Ts Boy London ClaptonTEXT PYNE, Beatrice Daughter F 14 1897 School London Clapton
PYNE, Alfred Son M 11 1900 School London Bethnal Green
PYNE, Albert Son M 8 1903 London Bethnal Green
Mary Ann's cousin Rebecca Levoir had married John Pyne (Thomas' brother?) on 15 May 1876 and they too are living in Ion Square in 1911.
8 Ion Square, B Green N E, London
PYNE, John Head Married M 55 1856 Book Binder Finsbury London
PYNE, Rebecca Wife Married 34 years F 53 1858 Domestic Bethnal Green London
PYNE, Fan Daughter Single F 24 1887 Pipe Maker Bethnal Green London
PYNE JUNIOR, John Son Single M 17 1894 Pipe Maker Bethnal Green London
PYNE, Mathew Son Single M 15 1896 Printer Bethnal Green London
PYNE, Maggie Daughter F 13 1898 School Bethnal Green London
PYNE, Avis Daughter F 11 1900 School Bethnal Green London
PYNE, Minnie Daughter F 7 1904 School Bethnal Green London
Sue