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The early seat of power of this dynasty appears to have been in County Louth at Óchtar Cuillche ( Colland ) at Collon , south of Ardee , County Louth and his descendants are said to have split up their inheritance here in the early 6th century .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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