following the primary sources of ML for a fast easy FIX I recommend to move this profile Gebhard Welf, Duke of Lotharingia [MP 2007]
son of Udo II, count in the Lahngau [MP 2007]
& cut [MP 2020] duplicate father ( Udo II, count in the Lahngau )
& then report all the rest duplicate for deletion (also wrong generations brothers)
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they are just a handful of mono (C) ADMN profiles, it makes no sense to struggle to merge them, indeed if they weren't stuck on the time I was preparing this discussion and drawing it would already be nice and finished :D
*https://www.geni.com/photo/view?photo_id=6000000173825697975
*https://media.geni.com/p13/57/6a/06/fd/5344485e6529a8b7/sharon_c_in...
