Aldwynne \al-dwynne, aldw(yn)-ne\ as a boy's name is a variant of Aldwin (Old English), and the meaning of Aldwynne is "old friend". The baby name Aldwynne sounds like Aldwynn and Aldwinne. Other similar baby names are Eldwynn, Aldwyn, Alswynn, Aldwinn, Alwynn and Gladwynne.