I usually just go to Google and put in both names. Such as how are frank+Jenner+edward+jenner related? I am surprised at what comes up. You may have to change sequence, or ask the question differently.
At one time when the Ancestry.Com series of "who do you think you are?" started, they had the question on their site and I just put in a relative I presumed might have somebody special. Amazing what came up.
Since your two people have recognition it shouldn't be too hard. Good luck.