Lost Items

So, this may be my bad for not reporting it sooner, but before I went to the Magwych Marshes, I made a pepys box in welkins reach full of stuff, and I was carrying a synchronus lotus (or lotus's but im pretty sure I was just carrying one) so that I could make a pepys box to transfer my stuff from welkins reach to Magwych Marshes

however, I died...a lot upon entering Magwych Marches, and at first, I did see the marker showing my items that I lost, but then I got fustrated and quite the game

upon reopening the game, the chest and marker with the items I lost is nowhere to be found, and so I do not have my synchronus lotus to make the pepys box to transfer my items from welkins reach :(

While it doesn't impact my progress, i would like my stuff back lol---i really wanted to try using the pepys box