found:An Aill bháin [SR] p1971:label (Sean 'ac Donnca); container insert (Seán 'ac Dhonncha)
found:An dubh ina bhán [SR] c1988:insert (Seán Mac Donncha; singer)
found:LCCN 94-746796: Croch suas é, p1983
found:There was a man upon the farm [SR] p1998:label (Seán Mac Donnchadha) booklet (Seán Mac Donnchadha, known more commonly as Johnny McDonagh; b. 1919; from Carna, Connemara, Co. Galway; Irish singer)
found:RamblingHouse, WWW site, Jan. 29, 2004:biography of Seosamh O hEanaigh (Sean 'ac Dhonncha, d. 1996; singer; friend and neighbor of Seosamh O hEanaigh around Carna, Co. Galway)
found:OCLC, Jan. 28, 2004(hdgs.: Mac Donncha, Seán; Mac Donnchadha, Seán; Donnca, Sean 'ac; McDonagh, John, 1919- ; usage: Seán Mac Donnchadha; Seán Mac Donncha; Seán 'Ac Dhonncha; Sean 'ac Donnca; John McDonagh)
Seán 'ac Dhonncha
Label from public data source Wikidata