I want a irish gaelic tattoo"mum" how will i find a website to show me.?

Mother is M�thair and Mum(my) is Mama�. Do you mean you want the name in Irish script? The tattooist should have a list of the letters, but if you google "Irish Script" the first entry is the Google images one and has a beautiful selection of alphabets which you can print and show him or her.