He succeeded his father as count of Boulogne from 971 to 990. On his death his lands were divided between his 3 sons:
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Featured National Park champion connections: Arnulf is 26 degrees from Theodore Roosevelt, 31 degrees from Stephanus Johannes Paulus Kruger, 27 degrees from George Catlin, 29 degrees from Marjory Douglas, 37 degrees from Sueko Embrey, 27 degrees from George Grinnell, 31 degrees from Anton Kröller, 26 degrees from Stephen Mather, 33 degrees from Kara McKean, 31 degrees from John Muir, 24 degrees from Victoria Hanover and 37 degrees from Charles Young on our single family tree. Login to find your connection.
B > Boulogne | D > de Boulogne > Arnulf (Boulogne) de Boulogne
Although there is an error in dates, without some better sources, it's impossible to tell whether these three men are actually related to each other, and/or whether the current dates on those profiles reflect what is known about them from primary sources.