According to their web site, The String family are:
A family of classically trained string players who launched their musical career by hitting the road full time from 2016 through 2018, bringing music to people around Australia. Featuring 2 cellos, 2 violins, voice and percussion they incorporated their unique story of life on the road as Australian musical gypsies with toe tapping celtic, folk, world and classical crossover music. On their musical journey they received numerous awards for performance and songwriting including: New Australian Celtic Talent of the Year, Australian Celtic Song of the Year, Australian National Busking Champions.
Recent conditions have put a stop to their travelling, but not their music making: