Making easier page without fourth line I penned in old language inside (10)

'making easier' is the definition.
(as in palliative care)

'fourth line i penned in old language inside' is the wordplay.
'fourth line' becomes 'palg' (I can't justify this - if you can you should give a lot more credence to this answer).
'penned in' is an insertion indicator.
'old language' becomes 'Latin' (Latin is a dead language).
'inside' indicates putting letters inside.
'i' going inside 'latin' is 'liatin'.
'palg' enclosing 'liatin' is 'PALLIATING'.

'page without' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.