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In page Effie Adelaide Rowlands:

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Rowlands was born Effie Adelaide Maria Henderson in 1859 in Adelaide, Province of South Australia (present-day South Australia) to Alexander Henderson, a British theatrical manager, proprietor and promoter, and Marie Nelson (c. 1833 – c. 1834–1913), an English actress and singer who performed under the name Marie Sidney.[1][2][3] Her parents were common-law married.[3] The maternal granddaughter of the composer Sidney Nelson, Rowlands was the niece of the actress and vocalist Eliza Nelson and the actor Henry Thornton Craven.[3][4] The younger sister of the actress Carrie Sydney Hope (née Caroline Sidney Henderson), Rowland was the elder half-sister of the actress and singer Blanche Massey, from her father's relationship with the actress Rose Massey.[citation needed]