sesqui-second cousin 

Child of their parent's sesqui-first cousins or are the child of their parent’s half-first cousin with their other parent’s first cousin.

My sesqui-second cousin is a good person.

sesqui-second cousin by Mr. Jacov November 23, 2019

sesqui-second-cousin 

Sesqui-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and three great-grandparents in common.

My sesqui-second-cousin is a good person.

sesqui-second-cousin by Gerald128 May 17, 2021

sesqua-second-cousin

Sesqua-2C:
Person who, in relation to the other person, has zero parents, zero grandparents and seven great-grandparents in common.

My sesqua-second-cousin is a good person.

sesqua-second-cousin by Gerald128 May 15, 2021