▁It ▁is ▁spec ulated ▁that ▁he ▁had ▁two ▁sons : ▁Pi otr ▁and ▁K ow rat . ▁It ▁is ▁possible ▁that ▁also ▁O lish ko ▁that ▁lived ▁at ▁half ▁of ▁the ▁ 1 5 th ▁century ▁was ▁his ▁son . ▁The ▁el dest ▁son ▁was ▁possibly ▁Pi otr ▁as ▁his ▁descend ants ▁constantly ▁took ▁command ▁over ▁Na iman ▁B anner . ▁ ▁Des c end ants ▁of ▁Pi otr ▁gave ▁origin ▁to ▁families ▁of ▁And r zej ew icz s ▁( vel ▁And r zej ew sk is ), ▁And ry se w icz s , ▁Ar s ł an ow icz s , ▁C ici ń sk is , ▁Ch orum ow icz s , ▁Jak ub ow icz s , ▁M ał usz ew icz s , ▁K ad ysz ew icz s , ▁Kas ym ow icz s , ▁Min bu ł at ow icz s , ▁Much are m ow icz s , ▁Pi ot row icz s , ▁Pi ot row sk is , ▁Sie le ck is , ▁Sk irm un ts , ▁S zeich - Star os iel sk is ▁and ▁Tom k iew icz s . ▁ ▁Kor w at ▁is ▁the ▁ancest or ▁to ▁families ▁of ▁Ad zyk icz s , ▁B az are w icz s , ▁G ie ł wan ow sk is , ▁Kaz kow icz s , ▁K ry czy ń skich , ▁Rus ins , ▁S ule w icz s , ▁Tok osz s , ▁U ł an ow