Could it have been McGowan at that time? Mc has often been dropped over time!
e.g.
Mary Eleanor Mc Gowan Birth: 27 Nov 1897
Parents
Father: John Mc Gowan
Mother: Anne Munnelly
Marriage(s)
Spouse: George Patterson
Marriage: 15 Jun 1922
Just says Ireland!! Only one I can find, this was by doing a search using Gowan! McGowan came up!