United Kingdom of Great Britain and Ireland (-12 April 1927) Rowland George Allanson Allanson-Winn, 5th Baron Headley (19 January 1855 – 22 June 1935), also known as Shaikh Rahmatullah al-Farooq, was an Irish peer and a prominent convert to Islam who was also one of the leading members of the Woking Muslim Mission, alongside Khwaja Kamal-ud-Din.

[1] Rowland George Allanson Allanson-Winn was born in London and educated at Westminster School and Trinity College, Cambridge University.

He subsequently became a civil engineer by profession, a builder of roads in India, and an authority on the protection of intertidal zones.

[10] He was offered the throne of Albania in 1925, along with $500,000 and $50,000 per year[11] but refused it, at which point Lady Headley returned to Melbourne, where she died in 1929.

Along with other Turkophiles, Headley defended the Turks when news of Armenian massacres, which he both justified and denied, had reached Europe.