Yes. Before a divorce is granted, you must provide proof of any previous divorce.
(e) if the parent or spouse against whom an order is sought ordinarily resides outside Canada or if the ordinary residence of the parent or spouse is unknown,
(i) the Child Support Table for Ontario set out in Schedule 1 to this Regulation if the other parent or spouse applying for the order resides in Ontario.
Child Support Guidelines, O Reg 391/97, 2.(1), "table", (e)(i)