She was elected to the position of Cathaoirleach (Chair of Seanad Éireann) on two occasions, becoming the first and only woman elected to the position.Honan was born in Dublin and educated at St.
Leo's Convent, Carlow and at the Mercy Convent, Clonmel.
Honan worked as a housewife and businesswoman before becoming active in politics.In 1977, she was elected to the 14th Seanad as a Fianna Fáil candidate on the Administrative Panel and served for 15 years until her defeat at the 1993 elections to the 20th Seanad.
In 1982, in the short-lived 16th Seanad, she was elected to the position of Cathaoirleach, the first woman to hold the post.
In 1983, in the 17th Seanad, she was elected as Leas-Chathaoirleach (Deputy Chair), and in 1987 (in the 18th Seanad, she was re-elected as Cathaoirleach.