English to Portuguese Law/Patents Insurance

In the event of any accident involving serious bodily impairment, serious illness involving you or death of yourself or that of your legal or de facto spouse, of one of your ascendants or descendants **up to once removed**, of your father-in-law, mother-in-law, brother, sister, brother-in-law, sister-in-law, son-in-law, daughter-in-law or those of the your spouse, in addition to any other person who generally lives with you;

Descrição da cobertura de um seguro. Penso que a expresão tenha a ver com algum limite mas não compreendi muito bem. Agradeço qualquer ajuda!