Looking for Tregonning Perth Western Australia Christchurch Wellington New Zealand

I am looking for any information or descendants of the following: William Penprase Tregonning, Perth, Western Australia. I understand he married Alice Smithies. Their son Thomas Tregonning, born Perth, WA who married Clara Ann Jeffrey, Tasmania b 13 March 1870. They had six children, four survived. (Hilda Frances / Eva Melvena / Mona Kathleen (died 28yrs) and Jeffrey Thomas. Moved to Christchurch, NZ, then to Wgtn. Divorce on grounds of desertion granted 1913.

Eva was my grandmother.