ex-spouse information required for spousal sponsorship applications

[furciferpardalis]

Question 17 of form IMM 5540 asks for information on my ex common law partner. I don't have a clue what his address is or exact dates. I'm not sure who I should be filling out this portion of the application. Should I leave it blank?
Thanks!

 

[AllisonVSC]

No, don't leave it blank. List current address as "unknown" or write his last known address and declare it as such. Try to give month and year for dates; if you can't give the year and then write a note explaining that you don't remember exactly.