Hello Fred,
I'm doing a couple of amateur one-name studies (the very rare name LOCHTIE and the uncommon name MCCLAUSE and all its innumerable variants) so I know how we one-namers tend to range far and wide. So this might be of interest?
My great-grandparents were Henry BURKE and Maria RAFFERTY who came from near Claremorris in Co Mayo. One of their children was my Ggpa John George (George) BURKE. George's sister, Mary Ann BURKE b Ireland ca 1835 married a Maurice Edward DAVIES (from London) in the goldfields of Victoria, Australia in 1859; he later became a newsagent. Their children included Elizabeth Emily DAVIES, b 1872 in Richmond, Victoria Australia.
In 1902 in Victoria, Elizabeth married Melbourne Charnock Delamotte MOTT (b New South Wales ca 1859, died 1915 in Essendon, Victoria).
He was the son of George Henry MOTT and Allegra Haidee CHARNOCK. He had siblings, some with equally impressive names - Ada Emily MOTT; Fenelon De La Motte MOTT (Fenelon married a Maud Mary SMITH (!) and they had a Fenelon De La Motte MOTT and an Allegra Maud MOTT); Decimus Horace MOTT (Decimus married a Margaret MILLAR and they had George Horace MOTT); and Margaret Eveline MOTT (she married a Mr FALCONER). All of the siblings died in Victoria Australia - Ada Emily in 1950, Melbourne in 1915, Fenelon in 1932, Decimus in 1947, and Margaret in 1958.
I haven't followed up the Australian MOTT family but a Google for Charnock + Mott gets quite a few hits.
Regards,
JAP