Biggest medieval seal matrix I have seen dug

The big impression looks the most promising for a reading. Pretty sure it begins with the usual s’ for ‘sigillum’ then I think I see Icha which made me wonder whether this might be a Richard — but that definitely looks like the expected ‘s’ before it and there seems to be no trace of an R. The next few letters look irrecoverable but the 2nd name/surname may end in els

Sorry — can’t win em all!