I'm still utterly confused by these letters and getting a commissioner of oath to sign one.
Is there something specific I need to write in addition to the letter for the commissioner to sign? Something to the effect of I <Name> swear this to be true and was sworn before <commissioners name> on <date?>
Does it matter what format it's in? Bullet points? A personal letter?
a public notary should b able to do it also...ours r personal letters and the notary had no problem signing it....all it happens the person who wrote the letter will sign in front of the notary and then the notary will write something like: declared in front of me on this date, the notary will write his name also, will sign it, and will put his notary stamp
the letters could b long short it does not matter...it's a testimonial abt ur relationship, that it's genuine, how long that person know each of u, how they met each of u, and also very important that u live together and since when if s/he knows (if u apply under common-law)....they could also state some events spent together, holidays, how they visit ur home, if u went to trips with them, it's up to them
u could also give letters from professionals, ur doctor, someone at ur bank, ur boss, these letters probably r more formal and to the point....but they too shold know both of u as a couple...
PM me if u want more details
read more the OP2 manual, there r many ideas there

good luck!!