If anyone can help please

My Grandmother Charlotte Maria Owen B1904
married 1922
my Grandfather Ivor Williams B1902
I have a Marriage certificate for CHarlotte's mother
Sarah Ann Evans
who married 25/12/1895
William John Owen B1874 - D1909
Sarah was widowed age 32 and remarried in 1913
She Married - Richard Otten B1882 - D1944
I can not find a father for William John Owen
information on where Sarah and John lived at any time
information on where Sarah and Richard Otten lived