Our information on the Tunis Baruch Lousadas can be sourced in refs 171, 185 and 186. Perhaps Elias and Benjamin descended from an earlier generation with Jacob Baruch Lousada together with Isaac Baruch Lousada appearing in Tunis in 1686 (from ref 185 p469); for Jacob Baruch Lousada in 1686 see also ref 296. They were probably related to the Livorno Levi Lousadas some of whom also moved to Tunis. See https://www.sephardicgen.com/tunis.htm for 19th century marriage between the Tunis Baruch Lousadas and the Malka family - but the detailed genealogy has not been worked out connecting this marriage with the above chart.