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