My wife’s grandfather was christened David Eyre Percival DRIVER, but in 1935 at the age of 21 he changed his name by deed poll to David Eyre PERCIVAL, as did his brother Michael PERCIVAL.
Here are the consequences in the descending tree of John DRIVER and Ann SPINK from Yorkshire :
John DRIVER ca 1795-ca 1821 &1818 Ann SPINK 1790-1862
1. John DRIVER 1821-1899 &1850 Sarah ALCOCK 1820-1878 &1880 Elizabeth FORMAN ca 1835-ca 1905
1.1. Frank DRIVER 1850 &1876 Mary Lucy EARP 1852
1.1.1. Frank Percival DRIVER 1883 & Edna ?? &1911 Olive Mary PARKIN
1.1.1.1. David Eyre PERCIVAL 1914-1995 &1944 Kathleen Margaret, dite Peggy JENKINS 1918-1987
1.1.1.1.1. Richard Kent PERCIVAL 1945- & Louise Georgiana Somerset MALFROY 1942-
1.1.1.1.1.1. Charlotte PERCIVAL 1970- & David SPIRA
1.1.1.1.1.1.1. Francesca Rose Georgiana SPIRA 2004-
1.1.1.1.1.1.2. Isabella SPIRA
1.1.1.1.1.2. Lucy Margaret PERCIVAL 1972- & Jason GUTTIEREZ
1.1.1.1.1.2.1. Robin Rose GUTTIEREZ
1.1.1.1.1.3. Alice Louise PERCIVAL 1977- & Neil CARBERRY
1.1.1.1.1.3.1. Rowan CARBERRY
1.1.1.1.1.4. Richard Eyre Somerset, dit Dickon PERCIVAL 1979-
1.1.1.1.2. Roger Neil PERCIVAL 1946- & Jacqueline HAMMOND
1.1.1.1.2.1. David John PERCIVAL 1974- &2000 Jacqueline BALDWIN
1.1.1.1.2.1.1. Emily Ann PERCIVAL 2004-
1.1.1.1.2.1.2. William PERCIVAL
1.1.1.1.3. Andrew David PERCIVAL 1948- &1971 Fiona Margaret Russell LEE 1950-
1.1.1.1.3.1. Joanna Margaret PERCIVAL 1973- &2008 Andrew, dit Gordy GORDON 1974-
1.1.1.1.3.2. Nicola Louise PERCIVAL 1976- &2008 Grégory Denis WOLF 1975-
1.1.1.1.3.3. Matthew Thomas Russell PERCIVAL 1980-
1.1.1.1.4. Jonathan Eyre PERCIVAL 1954- & Elizabeth Ann COLLIN 1951-
1.1.1.1.4.1. Victoria Helen PERCIVAL 1981-
1.1.1.1.4.2. Stephen Andrew Jon PERCIVAL 1987-
1.1.1.1.5. Edward Giles PERCIVAL 1960- & Sarah WILSON
1.1.1.1.5.1. Christopher Edward PERCIVAL 1989-
1.1.1.1.5.2. Rebecca Sarah PERCIVAL 1991-
1.1.1.1.5.3. Jessica Isabel PERCIVAL 1992-
1.1.1.2. Michael PERCIVAL DRIVER
1.1.2. Michael PERCIVAL DRIVER
1.2. John DRIVER 1852
1.3. Marion DRIVER 1854
1.4. Harriett DRIVER 1856 &1885 Alfred DARLISON ca 1852
1.5. Frederick DRIVER 1857-1928 &1881 Mary Eleanor JOYCE 1860-1945
1.6. Charlotte DRIVER 1859
1.7. Ernest DRIVER 1861 &1887 Ellen Frances Emily BENNETT 1862
1.8. Sarah DRIVER 1863-1867