Solved!
Aleš Trtnik has created a tool called WikiTree+ (https://wikitree.sdms.si/default.htm) that provides a vast array of ways to search for information.
WikiTree+ Text Search Help: https://www.wikitree.com/wiki/Help:WikiTree_Plus#Text_search_2
To search for notable descendants of person Tudor-18, you can enter: Descendants=Tudor-18 Notables https://wikitree.sdms.si/default.htm?report=srch1&Query=Descendants%3DTudor-18+Notables&MaxProfiles=500&SortOrder=Default&PageSize=10
Ancestor listmaker, and under List Type pick "Notables"
https://apps.wikitree.com/apps/ashley1950/listmaker/?id=Crawford-7109