My Cox Ancestors from Ealing

I am searching for any descendants of William and cHarlotte Cox (Lane) who were born in mUch Marchie Herefgefordshire in 1850 & 1848 respectively. One of their daughtersw Mabel Gertrude is my Grand mother (born 1880) She married Archibald Arrol Stewart in LOndon & they moved to Greymouth NZ where Archibald was born.