When you're analysing a sample of difficult handwriting you have to use the parts you already know to help decrypt the parts you don't. With a different hand it could well be con sibi but when we look at the "b"s in Lubochnia and Adalbertum we can see that the top loop is well formed and the bottom loop of the letter is closed. Now compare the difficult letter with some of the "l"s in the script. In particular look at the "l" in masculum. The final letter really puzzles me. By consistency with the rest of the script it is closer to "s" than "o" but it could be either. I don't think the word can be consulis because the supposed "u" does not match other "u"s in the script. Also there is a dot above the letter, indicating it as an "i". The dot is poorly formed but it is very similar to the one over the "i" in in in the middle of the second line. As voxlarsi points out this word has to indicate something fairly unusual as it does not appear in other nearby entries. When you revisit the archive, Mike, can you have a good trawl through to see if you can find another occurrence of the word? This might make it clearer and also give a better idea of its frequency. Well done on cracking "Żelaszczyk", Mike.