KING family of FETHARD, emigrated c1899

[j147]

I'm trying to find out about my great-grandmother and her parents, who emigrated from Fethard to London/Essex in around 1899.

The family were known by the name of King, but according to my late grandfather this had been anglicised from something sounding like "ray" (I was only a kid at the time and didn't ask how to spell it!). I don't know when - all I know is that they were using the surname of King in 1901 when they appear on the UK Census in Charlton, London.

My great-grandmother, Alice Mary King, was born in Fethard circa 1894. She was the daughter of John King (originally Sean "ray"), b Fethard circa 1870, and Nora King, b circa 1873. Alice  had a brother John, b Fethard circa 1896; a sister Kathleen (later Sister Gabrielle at Poor Clares Convent, Loughton, Essex), b Fethard circa 1898; and Nora who was born in 1900 in Kent, England.

Any information / pointers / advice much appreciated.

Thanks

Tony