This is a pilot study on the relationship between speaking Irish and belonging, with a focus on Irish-speakers of diverse ethnicities and/or nationalities in Ireland. The research includes twelve respondents with diverse backgrounds in terms of nationality and/or ethnicity. We examine whether the language gives them a sense of belonging to Ireland, but also if they experience any exclusion on the basis that it does not 'belong' to them. Our research is qualitative and we analyse the data through the lens of nationalism studies. We suggest that Irish can be an important tool in the hands of speakers of diverse ethnicities and/or nationalities, a power that they can use in diverse ways, including to foster integration, avoid alienation, legitimise their presence in the country and fight against forms of discrimination. Yet, questions arise when the national heritage is passed on by individuals that many people do not consider 'national'. Do clashes occur between people who consider themselves to be of Irish ethnicity and nationality and Irish speakers of diverse ethnicities and/or nationalities? What are the reasons for the clashes and what are the consequences? This study offers some answers while pointing to the needs of more investigation of the subject.