WV vital records can be accessed thru WV Dept of History and Culture.
http://www.wvculture.org/vrr/va_select.aspx

Roy V. Blake was born in Grant county.
http://www.wvculture.org/vrr/va_bcdetail.aspx?Id=521391

i cannot find death records for charles or louisa, but they did have have a baby die...Jamess O. Blake,
in WV in 1886.
http://www.wvculture.org/vrr/va_dcdetail.aspx?Id=4592905

hope this helps.