Thanks for the detective work, Roy, it makes things clearer.
Doing a bit of digging with the census gets a little confusing

1891 has Leander with her siblings & parents, Solomon & Eliza Hearne in Wandsworth.
Going back to 1881 this same Solomon & Eliza are at South Weald, Essex at Daws Farm (RG11/1756/149/6) but no Leander only a 1 year old daughter, Mary born Southweald..is this Leander? Essex is not Surrey!
1871 has Solomon & Eliza in N. Benfleet (RG10/1659/14/4)
Possible marriage of Solomon Hearn, Q1 1864, Chelmsford with an Eliza Everitt on same page.
1861 there is a possible siting of Solomon but down as Solomon Amos a servant.
1851, Great Baddow (HO107/1776/540/25)
Joseph Smith 36 ag lab b. Broomfield, Essex
Sarah Smith 38 b. Widford, Essex
SOLOMON H. SMITH 13 b. Gt. Baddow
Jessie? male 7 ditto
Emily 4 ditto
Amos 1 ditto
1841 Grt. Baddow
Meshac Hurn 70 Tinman not born Essex
Sarah 25 born Essex
Solomon 4 ditto
Looks like Solomon was illegitimate but Sarah marries a Joseph Smith, Q3 1844, Chelmsford. Sarah Hearn on same page.
There is a death reg. for Leander Thorpe Q1 1947, Worthing. Her age is given as 73 which gives her a DOB of 1874. They've made her a few years older

Jane