Use of isonymous marriages in the study of consanguinity.

"In a previous investigation the distribution of isonymous marriages was traced for the last 160 years in Civitella del Tronto [Italy]. In this report the authors test the reliability of the method, by verifying if isonymous mates actually descend from a common ancestor. The family menages of the three families with the highest rate of isonymous marriages [during the period 1810-1969] were reconstructed over 10-11 generations." (SUMMARY IN FRE AND ITA)