This　paper　is　to　pursue　a　general　investigation　of　cooperative　robust　output　regulation　for　linear　continuous-time　multiple　multivariable　systems　with　unknown　system　parameters　and　unmodeled　external　disturbances.　We　show　that,　under　standard　minimum-phase　and　relative　degree　like　assumptions,　an　internal　model　principle　based　output-feedback　protocol　can　be　constructed　by　incorporating　suitable　dynamic　compensators,　even　when　the　parametric　uncertainties　are　arbitrarily　large　in　some　sense.　Moreover,　we　are　able　to　establish　a　redesigned　protocol　by　means　of　adapting　the　H∞　control　method.　It　assures　a　desired　robustness　property　for　the　closed-loop　system　of　attenuating　external　unmodeled　disturbances.　Hence,　our　study　offers　a　performance-constrained　robust　control　solution　in　a　distributed　control　fashion.　©　2018　Elsevier　Ltd