Home town:
https://www.washingtonpost.com/world/asia_pacific/in-brenton-harrison-tarrants-australian-hometown-his-relatives-remember-violent-video-games-trouble-with-women/2019/03/17/68c6aafe-48ad-11e9-b871-978e5c757325_story.html?utm_term=.86498c164233
GRAFTON, Australia
Therapists listed in Google Maps in Grafton, AUS:
https://www.google.com/maps/search/therapist/@-29.7061875,152.8582052,12z/data=!3m1!4b1
It's a start, at least.