Manon Steffan Ros (born 19 January 1983[1]) is a Welsh novelist, playwright, games author, scriptwriter and musician (being one half of the acoustic duo 'Blodau Gwylltion').

Her award-winning novel Blasu has been translated (by the author) into English, under the title of The Seasoning.

In June 2017, she won the prestigious Tir na n-Og Award for the third time, in the primary school category, presented by the Welsh Books Council to honour the year's best Welsh-language book.

She won the Prose Medal at the National Eisteddfod 2018, for her work Llyfr Glas Nebo, written under her nom de plume Aleloia.

[11] The novel is told in dual narrative by a boy and his mother navigating a post-apocalyptic world and depicts Welsh identity and culture.