There was a family ADAM in La Rochelle and they were Protestants.
A Marie ADAM was married to Claude CHAMBERT. Their son Isaac CHAMBERT got married in 1674 (frame 88) in La Rochelle, Saint-Sauveur parish
The records of La Rochelle are online (free access). Choose
Commune : La Rochelle
Collection : Collection du greffe
Type de registre : Pastoral
and then click on Rechercher (Search). Almost all the Protestant registers available will be listed. There are a few more if you choose Collection communale instead of Collection du greffe.