Magenta Marshall was born on 14 December 1994 in East Fremantle, Western Australia to Janine Marie Wilders, public servant.
Marshall grew up in single-parent household in Cooloongup living with her mum and later legally adopted by Barry Robert Wilders.
[5] Marshall went on to successfully complete her Bachelor of Arts majoring in Asian Studies and Political and International Relations with a minor in Indonesian.
[6] This follows criticism from her previous Liberal opponent and current City of Rockingham Councillor, Peter Hudson, where he posed that Marshall should resign from parliament if she would to fall pregnant.
[10] Following the resignation of Mark McGowan, Marshall was preselected unopposed as Labor's candidate for the 2023 Rockingham state by-election.