There are two existing individuals in the tree who I know are brothers: Conrad Langenbach (Langenbach-26) and Balser Langenbach (Langenbach-28); this fact has been cited in the literature (Ernst, Donna B., "Sundance - My Uncle", College Station, TX, Creative Publishing Co. 1992.)
As a newbie around here, I went to link the two together as siblings, but then discovered it is only possible to link siblings via a shared parent. This seems kinda unsatisfying, since I would have to create an "Unknown Langenbach". Is this the accepted practice for this situation?