ADF is a pagan church focused on the different ancient Indo-European Traditions they focus greatly on worship, study, and fellowship. The name ADF is short for Ár nDraíocht Féin: A Druid Fellowship. You can find them here https://www.adf.org/
ADF has many things to offer and if you are Gaulish focused they have a couple different groups within to help you connect with others that are also Gaulish focused.
Three Cranes Grove
This is an ADF grove housed in Ohio focused mostly on Gaulish polytheism, they hold public rites, workshops, and too community services.
ADF also has Kin groups within the organization that if you are a member you can join one of them is a Gaulish Kin group. If you are a member you can find a Facebook group connected to the Gaulish Kin group here at the Gaulish Kin ADF Facebook group