ajf on Family Tree Circles

I have been trying to locate any information on my mothers family tree (ROBERTS & Wilson Families) without much luck.

Family stories are; A Roberts Family member came to Australia from North Wales but I don't know which family member it was.

My Grandfather Evelyn "Lyn" Wilson Roberts and his brothers were born in Newcastle NSW.

His Brothers were:
Stephen Everard Roberts
Evelyn Wilson Roberts
Clarence Willis H Roberts
Arthur E Roberts

Two half brothers:
Edgar J Roberts
John C Roberts

My Great Grandfather was
NAME: Stephen Edward Roberts,
BORN: Buninyong, Ballarat Vic. 1865

His Parents:
FATHER: Robert Roberts
MOTHER: Rachael Lewis

MARRIED: Margaret Wilson, 1888
BORN: Ballarat Vic. 1865

Her Parents:
Father: Thomas Wilson
Mother: Eliza Cummins

Any help would be most appreciated.