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Webster 1913 Edition

Noun.

[LL.

compaternitas

, fr.

compater

godfather;

com-

pater

father.]

The relation of a godfather to a person.

[Obs.]

The relation of gossipred or

compaternity

by the canon law is a spiritual affinity.

Sir J. Davies.

Noun.

[con and paternity.] The relation of a godfather to the person for whom he answers.

compaternity ‎(usually uncountable, plural compaternities)

(obsolete) The relationship of a godfather to a person.
The relation of gossipred or compaternity by the cannon law is a spiritual affinity. — Sir J. Davies.