evidence: I came across a post on Facebook corroborating this claim with an old black and white photo of Graham Bell with a lady, that purports to explain the origin of the word "Hello." This story about the surname of Alexander Graham Bell’s girlfriend Margaret Hello is false and nothing more. The lady in this photo purported to be ‘Margaret Hello’ was, in fact, Mabel Gardiner Hubbard who in 1876 was engaged to him; a woman whom he married the following year and who remained his wife until he died in 1922. [...] - No, ‘Margaret Hello’ was not phone inventor Alexander Graham Bell’s girlfriend (africacheck.org)