Can one say:
1-Of his four marriages, Jane was his third wife.
2-Of his four marriages, it was his third wife who suffered most.
3-Of the accidents that took place in ABC road today, this the fourth victim.
1 & 2 aren't things one would usually say, but I am imagining a context where one wants to be absolutely precise as regards the place Jane occupied in the order of his wives.
This is something we don't do very well in English; try asking the question to place her. You could use your sentences or do something like There were/he had four in total and Jane was his third wife.